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In Europe, my husband and I like to use public transportation. As a result, we frequently find ourselves studying itineraries displayed on train station walls, trying to read schedules posted at bus stops, or staring at kiosk-size town maps. On our last trip, my husband snapped digital photographs of those things. We were able to take the map or itinerary with us and could refer to it as needed by using the zoom feature.

If you have to save receipts while traveling, purchase a plastic coupon holder to help you keep track of them (it'll also protect them). Label each section of the coupon holder by category (hotel, rental car, gas, food, etc.) or by day of the week. The coupon holders are compact and easily fit into a laptop case, purse, or travel bag.

Sending a flat-rate Priority Mail box costs $8.10, no matter how much it weighs or which state it's going to. After accumulating too much stuff to fit in my suitcase during a trip to Atlanta, I filled a box with laundry, souvenirs, and gifts for my grandchildren, and mailed it to my home address.

I'm a gadget freak, and I don't like to travel without things like my digital camera and iPod. On one trip, though, I put my camera down in a crowded restaurant and then forgot to put it back in my bag. By the time I remembered it, the camera was long gone. Now, I attach those kinds of items to my daypack with a lanyard. They're still easy to pull out and use, and they never get left behind.

I work for a major airline and can attest to this tip for redirecting lost luggage. Place a copy of your itinerary--including contact info for where you're staying--inside your checked suitcase. If name and flight tags are missing, we'll still know where your bag needs to go.

We were told by an airport security official to tape a business card onto the cover of our laptop. Turns out he has an average of six laptop computers left behind each day! There are so many more procedures now--removing shoes, removing coats--that people forget when they send their laptop through in a separate bin. The official added that it's very difficult to return them because most laptops have passwords that keep the owners' personal information hidden.

When my husband and I travel with our children, our luggage is weighed down by diapers, formula, and other necessities. To save space and hassle, we now ship ahead most of those items to our hotel. We also came across a Web site called babiestravellite.com, where we can order supplies and have them shipped anywhere in the world.

When we visit places we think we might return to, we collect copies of free tourist magazines. At home, we write the address of each magazine on a postcard. Six to eight weeks before our return visit, we send out the cards asking for a current copy. The magazines are full of useful information.

Don't rush off the car-rental lot. Before driving away--especially in foreign countries where the controls might be unfamiliar-test the headlights and brakes, and look for the extra tire and changing tools. I once had a rental with malfunctioning brakes in Mexico and caused a minor accident--one that could certainly have been avoided had I checked them properly before leaving the lot.

I travel with two cameras: a digital SLR for the majority of my shots, and a small disposable camera for when I ask strangers to take pictures of me. As much as I tend to trust other people, I'm not ready to hand over my $1,000 camera to someone I don't know at all.

Tell me I'm not alone: Almost every time I park my car at the airport, I have trouble finding it when I return. (I even reported my car stolen once after searching for hours, only to discover I was in the wrong lot!) I now use my cell phone to leave myself a message as to where I've parked my car.

After I fell into a stream in Cambodia, my digital camera wouldn't work. Someone suggested leaving the camera in a bag of rice overnight to draw out any condensation. By the next morning, it was dry and working perfectly.

In North American cities with large Chinese communities, choose a family-run Chinese restaurant and ask for the set family meals, usually written in Chinese. They are more authentic than those typically offered to tourists and people who are not Chinese—not to mention a better value. In San Francisco, for example, you can enjoy a five-course meal, which easily feeds a family of four, for less than $20.

A padlocked zipper tells thieves there's something in your bag worth stealing, but a key ring is much less obvious. Just use it to latch together the zippers. Best of all, you'll never have to worry about forgetting your combination.

Making international calls back to the States can be confusing if you're using a calling card and you're dialing a number by its catchphrase, such as CALL ATT. Obviously, many countries don't have the English alphabet on the telephone keypad. My solution? I create my own small keypads on a computer, print them out, and attach them inside my wallet, to my passport, and to my calling cards.

Know your PINs! My husband and I left home with very little cash on us, and instead of stopping to get money at the airport, my husband--ever the procrastinator--decided to wait until we got to Cancún to use his ATM card. Guess what? It didn't work in any of the machines. And although he had several credit cards for cash advances, he didn't know the PINs off the top of his head. We charged everything we could during our stay, but most of the markets don't take credit cards. Needless to say, I didn't come home with a lot of souvenirs.

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.

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.

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.

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.

Flight attendants often work vampire hours and have to sleep during the day. How do we keep the sunlight from leaking into our hotel rooms? We clip a skirt hanger (or two) to the middle of the drapes to seal them together.

Finding the bathroom in the middle of the night in a strange hotel room or cruise-ship cabin can be a challenge. Leaving the bathroom light on seems wasteful and makes the room too bright for sleeping. My husband and I used to travel with a night-light, but we couldn't always find a convenient place to plug it in. We've recently discovered a better solution: plastic light sticks. They come in several glow-in-the- dark colors and are activated by bending the tube into a circle and connecting the ends. Each evening, we hook one of the loops over the bathroom-door handle, where it provides a gentle glow through the night.

Put your perfume and cologne bottles inside pairs of rolled-up socks to keep them cushioned during your journey.

I used to lug around a clothes steamer and adapter to stay wrinkle-free while on the road, but I've since opted for something more low-tech. I now travel with a Platypus collapsible bottle and a spray bottle head. After checking into my hotel, I immediately hang my clothes and give them a spritz with water from the spray bottle. After several hours, the wrinkles fall out, and the clothing is dry and ready to wear.

Make your cabin homier by packing a small collapsible vase and a bouquet of flowers.

Don't assume a single room costs less than a double one. I booked a hotel in Spain online and noticed that rates were the same whether I booked a single or a double, but the single was much smaller and its bathroom had only a small shower stall and no tub.

If you can't sleep due to the heat in your non-air-conditioned hotel room, take a cold bottle of water and place it on your pillow, in the crook of your neck. It will cool your whole body down.

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!

The middle seat isn't always awful. On a recent trip overseas, I called too late to confirm an aisle or window seat. After explaining the plane's AB-CDEFG-HI configuration, the customer service agent urged me to take the very middle seat, E, because D and F have less foot room. (In some rows, there are metal boxes underneath the seats in front of you that house wiring for onboard electronics.) I went along with her advice somewhat skeptically, but I ended up with plenty of room. The people on either side of me weren't so lucky.

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.