Snap Guide: London

Rather than risk losing your department-store credit cards and club-membership cards, you should really leave them behind when you go somewhere you won't need them. Your purse or wallet will be lighter and your worries fewer.

Check fares periodically after booking your airfare. The airline may have a sale, and buying new tickets could save you money, even after you pay the change penalty. My wife and I used Travelocity's Fare Finder to pocket $187 each on a recent trip from Seattle to New York City, simply by re-ticketing.

To ensure the studs of pierced and delicate earrings don't get damaged, I put them in a film canister. An added benefit is that they're less likely to be stolen when left in a suitcase or hotel room, because thieves presume there's nothing inside but film.

Booking condos last minute can yield incredible bargains, and there's a way to maximize savings while minimizing the risk that you won't find a room at all. ("Last minute" generally means a month or less before your stay; seven-day deals usually start on a Saturday.) Buy your plane ticket and book a refundable hotel room you can use in case you can't find that bargain condo. Then, a month or so before your trip, start looking at last-minute sites—lastminutetravel.com, site59.com, etc. If you find a deal, simply get a refund on the hotel room and pay the cancellation fee, if there happens to be one. Using this technique, I found a great beachfront, one-bedroom condo on Maui—and I saved about $300.

When parking in a crowded garage, don't settle for the first space available on a lower level. It's probably a half-day hike from the elevator. Instead, drive to the upper levels, where you can usually park right next to the elevator. This tip was very useful in Las Vegas, especially when checking in and out of hotels with our luggage.

Instead of dropping my laundry off at the front desk, I take a walk around the block and look for the nearest dry cleaner--probably the same one the hotel would've taken it to. By cutting out the middle man, I pay a quarter of what they charge at the hotel!

When renting a car, photograph any damage the car may have before leaving the rental agency; a digital camera records the date and time of each picture. On a recent trip to Argentina, I rented a car with extensive paint damage. When I returned the car, the agency attempted to blame me for the scratches. I showed them my photographs, and they rescinded their accusations.

If you're traveling overseas, be sure to check the fine print concerning passports (go online or call the country's embassy). I had three months before my passport expired and found out at the last minute that I needed six months' leeway to enter Tahiti. Luckily, I was able to get a new passport just in time for my vacation.

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.

With two of our last three car rentals, the local branch wanted documentation beyond the standard insurance card issued by our insurance company. In San Juan, we were delayed a half hour while the agent made phone calls to verify that our liability insurance was good in Puerto Rico. In Miami, if we hadn't provided proof that our insurance covered rental cars, we would've been charged a daily collision insurance fee. Fortunately, we knew ahead of time and took a copy of the pertinent section of our policy. Our credit card included car rental insurance, but proof of that coverage was also required.

Accidentally reformat your camera's memory card? As long as you don't overwrite the disk by shooting more photos, those original pictures are still there. Buy another card to use in the meantime, and then, when you get home, either purchase a file-recovery software program (about $35) or take the card to a camera shop and see if someone there can help.

Priceline was a total pig in a poke for me, so I never used the web site, until I found out about biddingfortravel.com. This helpful Web site gives potential bidders an idea of prices that are being accepted (and declined) on priceline.com for particular dates and properties (or airfares or car rentals). I got the Hyatt Regency Miami for $35 per night because of this!

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."

When we come home at night, my wife and I each take a dollar from our wallets and put them in a special spot. We deposit what we've collected into a travel account at our bank every few months, so at the end of a year, we have $730 toward our next vacation—not counting interest.

I don't go anywhere without individual packets of antibacterial wipes. I slip some in my carry-on, daypack, and shirt pocket. They're very convenient when you can't find any running water with which to wash your hands. And because they're antibacterial, they're also great for cleaning cuts, and the alcohol from the wipes helps stop the itching when you rub them on insect bites.

During the hot months of summer, I plan to travel with a very small spray bottle. I'll fill it with water and use it as a mister to keep cool. I got this idea when we stayed at the Noga Hilton in Cannes. On the dresser was a pink aerosol can full of Evian water. I took it with us sightseeing and, wow, it was so refreshing to spritz water on our faces.

On the final day of a recent Caribbean vacation, I tried to arrange for a late checkout, but was told it wasn't possible. The hotel offered me the use of a day room; it would have been perfect, but it was being used by other guests, and there was a very long wait for the shower. I went back upstairs and saw that someone was just about to clean my room. I told the housekeeper that I understood she had to do her job, but I wondered if I could I take a quick shower first. She offered to clean next door while I took my shower. I tipped her $10 and then left for the airport.

Before setting off on one of my many backpacking excursions, I head to Kinko's to rebind my guidebook. I replace the cover with a plain black or navy one. It costs about $6 and allows me to blend in much better while traveling. People see my new book as a journal, not a travel guide that labels me a tourist.

Use an empty M&M's Minis tube to carry quarters. The top holds tightly, but still pops open easily enough, and the size is perfect to slip into a car door or bag. I find it very useful when traveling by car (for tolls and parking meters) and by airplane (for luggage carts or newspapers).

Cold-weather traveling means turning up the thermostat in your hotel room, and along with the artificially warmed air come dry skin and static electricity. Instead of turning on the heat, fill the bathtub with very hot water and leave the bathroom door open. In about an hour, your entire room will be warm and humidified.

To find a reasonably priced villa or apartment to rent, try going directly to the owner through a site such as abritel.fr. (Click on the British flag for English.) I arranged to spend two weeks in an apartment in Brittany and one week in an apartment in the Loire Valley, all for a total of $800.

My hearing loss once made it impossible to hear any alarm clock. Then I found the Shake Awake, an alarm clock that vibrates. I no longer stare at the ceiling all night prior to an early flight in fear of oversleeping. I clip Shake Awake to my pillow or place it on a hard surface near my bed, where its rattling definitely gets my attention.

If you take an overnight flight to Europe and early check-in at your hotel isn't an option, ask the concierge if you can store your luggage until later in the day and use the hotel gym's shower. You'll be refreshed and ready for sightseeing. Pack toiletries and a change of clothes in your carry-on.

Before you head to the airport, make a list of all the items in your checked luggage that would be prohibited in your carry-on. If an item (such as a knife for a picnic) makes its way into your purse or daypack during your travels, it should be accounted for when repacking and put into the checked piece to avoid hassles at airport security.

The couple of hangers provided on cruise ships aren't enough for weeklong trips. So I save wire hangers from the dry cleaner and slip a few into our suitcases while packing. I then leave them behind for the next passenger.

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.

If you're traveling solo and your room has a double bed, sleep on the side farthest from the phone. It's slept on less frequently and is therefore more comfortable.

When seeking a cheap airfare, don't forget to consult the Web sites of the major charter tour operators--like Apple Vacations, TNT Vacations, Vacation Express, or SunTrips--which frequently sell air-only tickets in addition to air-and-hotel packages. Doing so helped me slash the cost of round-trip airfare to visit my mother in Las Vegas by well over 50 percent.

If you're packing a lunch to eat later in the day, freeze a 16-ounce water bottle and pack it, along with yogurt, cottage cheese, a ham sandwich, or whatever in a light- weight, insulated bag. Your snacks will remain cold, and you can drink the water.

Instead of bringing one of those bungee cables to hang-dry my delicates and socks, I pack a couple of mini plastic hangers--the ones that bras and panties come on when you buy them. They take up very little room in my luggage and can be thrown away at the end of the trip.