Trip Coach: January 16, 2007

I never leave home without dental floss. I've used it as a clothesline between tents in Botswana's Okavango Delta and to replace a lost screw for my sunglasses in Malaysia. I even cut off a piece of floss the size of my waist and headed to the night markets in Bangkok. My "tape measure" assured a perfect fit!

If you're divorced and plan to travel out of the country with your children, check the legal requirements in advance. When I tried to take my kids to Cancun, I learned too late that Mexico requires a notarized letter of consent signed by both parents for minors traveling alone or with one parent or guardian. If the parents are divorced, a copy of the parental custody agreement is allowed instead. The airlines enforce this rule before you get on the plane.

Many computer photo albums use camera date stamps to organize collections. Whenever you're traveling in a time zone that might affect the date stamp (if you're crossing the International Date Line, for example), remember to reset your camera's clock.

If you wait to buy a discount-granting Entertainment Book until around six months before it expires (expiration is usually scheduled for November), you can often buy a $20 to $47 book for as little as $10, plus $5 shipping. Online access to the coupons is sold for $7 a month. These are great for vacations out of town.

Dry-cleaning bags stop clothes from wrinkling. Slide each garment into its own bag (leave the hanger at home) and place them flat on your bed, one on top of another. Then carefully fold the entire stack to fit it in your suitcase. Once you get to your hotel, hang everything up as soon as you can. You'll never unpack a suitcase of wrinkled clothes again.

Batteries for cameras, laptops, cell phones, and other devices can be charged at night in your hotel room. But if you're doing a lot of driving, you might want to buy an inverter to charge them while on the road. Inverters (which plug into the car's cigarette lighter) are small, inexpensive, and can be purchased at auto-supply, variety, or electronics stores.

Before my last long flight, I went to librivox.org and chose a bunch of books, short stories, and poems to download to my iPod--for free. The site has both adult and children's books, and the list is growing. All of the titles are in the public domain, and they're read by volunteers, so there's no question of copyright infringement. Even if you don't own an iPod, you can download them to your computer and burn them onto a CD.

Some international airlines still give passengers a goody bag that includes a toothbrush, an eye mask, and socks for the flight. Keep those socks: They're handy when visiting temples in Thailand, Vietnam, and Cambodia, where you must remove your shoes before entering. I slipped on the socks and my feet stayed both clean and warm!

Place a fabric softener sheet in your suitcase when packing. It'll absorb odors and dampness and keep clothing smelling fresh. It's most beneficial in warm, humid climates and while at sea. I found this quite useful during my twenty-three years in the U.S.Navy.

If you're traveling with someone, discuss a central meeting place in case you get separated. My husband and I were in Paris waiting to board the Metro. He was able to board the train, but I was left behind on the platform. Having a plan saved both time and needless anxiety.

Consider asking your driver or tour guide to haggle on your behalf at bazaars and souks. (But don't let them lead you to places where they might have a connection to the shopkeeper.) The money you tip them will usually be less than the markup on prices for tourists.

Having spent a number of years working for Norwegian Cruise Line, I learned that a dinner roll helps to settle the stomach when seas become rough. The less liquid sloshing around unimpeded, the better. And if you forget your motion-sickness pills or wristbands, fear not, as the purser always has medicine available for seasick passengers.

I live in coastal Florida, where the electricity sometimes goes out during violent storms. Before a trip, I place a few ice cubes in a plastic bag and put the bag in the freezer. If the ice has melted and refrozen by the time I get home, I'll know we've had a power outage and that any food left in the refrigerator may be unsafe to consume.

Check out worldclimate.com to find monthly average temperatures and rainfall for thousands of cities worldwide. You can avoid countries during their rainy seasons, and the information is useful for figuring out what to pack.

On international flights, I used to fumble through my belongings--often having to retrieve them from the overhead bin--after a flight attendant appeared with customs and immigration forms. (I don't know of many people who have their passport's number and date of issue memorized.) Now I write all that info on the bookmark of whatever I plan to read on the long flight so I don't have to dig out my passport. I can fill out the card quickly--giving me more time to loan my pen to all the people who never seem to carry one.

If you plan to buy crafts in a country where bargaining is expected, use the time it takes for luggage to be unloaded to scope out the airport stores. Jot down items you like and their retail prices. If you find a similar item while touring the country, you have a top-end bargaining point. If you don't find the object at a better price, you can always pick it up at the airport while you're waiting for your flight home.

Spring skiing often means a wild temperature shift from morning to afternoon. If you want the option of removing outer layers or switching to a lighter ski jacket midday, attach the lift ticket to your clothing with a split-ring key ring. You'll be able to move your ticket as the weather warms up.

If you don't have enough frequent-flier miles to get to Europe, use your miles to reach a major airport in the United States and then pay for the overseas flight from there. For a trip to Ireland, my husband and I used Delta SkyMiles to get from Cincinnati to New York's JFK airport and from there took Aer Lingus to Ireland. The Aer Lingus internet special was $267 per person. A Delta flight from Cincinnati to Ireland was $1,150 for two. We saved more than $600.

I switch from street shoes to flannel-lined moccasins at the airport. It saves time at the security checkpoint, and I'm comfortable during the flight. Once I land, I switch back to my street shoes.

I agree that the anti-seasickness medication for cruises, Bonine, is excellent and effective; but there is a budget way to buy it. The primary ingredient in Bonine is meclizine (25 mg). While a package of eight Bonine tablets costs just over $4 at a drugstore, you can buy a bottle of 100 generic meclizine (25 mg) for about the same price. This is an over-the-counter (no prescription needed) item, but you usually have to ask for it at the pharmacy counter.

Frequent fliers should consider noise-cancellation headphones. They have a built-in device that "hears" low-frequency sound just before you do and generates a sound wave that cancels it out. Several manufacturers make them, ranging in price from $40 to $300 or so.

If you book a package over the Internet, print out all the details of what's included and take it with you. When a hotel desk clerk in Paris said that the breakfast buffet we had enjoyed for the previous seven mornings was not included in our package, I was able to show him the printouts and prove him wrong. He apologized profusely and wiped the breakfast charges from our bill.

If your travels take you to U.S. cities large enough to have museums, zoos, and/or botanical gardens, consider buying a membership in your home city's counterpart. Many have reciprocal privileges with institutions elsewhere. A membership at Chicago's Lincoln Park Zoo, for example, lets you see the National Zoo in Washington, D.C., and zoos in Los Angeles, Des Moines, and Jackson, Mississippi, at no charge.

Deli counters in grocery stores are great mealtime alternatives to restaurants or fast-food fare when you're exploring the United States. The food is fresh, there's a big variety (hot and cold), and economically, it's a great break. I recently had a complete hot meal, including beverage, for $3 from a grocery-store deli.

Most hotels provide cloth shoe mitts but not polish. In a pinch, a dollop of skin cream on a shoe mitt (or even a tissue) can make scuff marks vanish and leave shoes as shiny as if they'd been cleaned by a pro.

In order to provide any reimbursement for a lost suitcase, most airlines and insurance companies require an itemized list of exactly what was inside it. Unfortunately, remembering everything you packed after the fact is virtually impossible. To avoid the headache, take pictures of the items you're going to put in your suitcase with your digital camera or cell phone. The photos will make creating the list a breeze, and, in the event of a dispute with the airline or insurance agent, you have some visual evidence of ownership.

Paper place mats can be useful anywhere there's an outdoor shower. By stepping onto a place mat after a bush shower in Botswana, I managed to keep my feet clean and avoided getting dirt in my clothes.

Save major bucks by going onto eBay and purchasing coupons and gift certificates that others don't want or can't use for lodging, transportation, food, and admissions. I've found great discounts for airline and Amtrak tickets; car rentals; entrance to amusement parks such as SeaWorld, Disney, or Universal Studios; as well as overnights at many hotels. For example, I bought a $30 savings coupon at SeaWorld for only $1. Simply search for your destination and then type in "coupon" or "gift certificate."

We've traveled to both Mexico and China in the last year and had the same experience in both countries: When we tried to exchange dollars to local currency, the banks wouldn't take bills with graffiti on them--telephone numbers, names, doodles, anything. Nor would they accept any bills that were torn or damaged. (We noticed a group from France having the same problem with their euros.) So before you leave home, make sure that any money you plan on exchanging is absolutely crisp and clean--or better yet, ask your bank specifically for brand-new bills.

Create an ID page for each of your children before you leave on a trip. In addition to vacation contact information (hotel name and phone number), include the child's name, a current photo, home address, phone, date of birth, Social Security number, passport number, hair color, eye color, height, any identifying marks, blood type, allergies, medications, doctor and insurance phone numbers and ID numbers, immunization schedule, and fingerprints (these don't change, so investing the time to have a set made is worth it). If the unspeakable happens, the ability to hand over instant, concise information to authorities may prove invaluable. Update it before every trip.