Painting the Desert Red

Disposable-camera lenses scratch just like any other lens would. Place a small piece of painter's tape (or another kind that won't stick too much) over the lens to protect it from contact with other items in your purse or backpack during travel.

Even if you're not hungry when the flight attendant comes around with the snack service, take it for later. Although peanuts may not look appetizing at 7 a.m., they will look good later if you have nothing better to eat. And it saves you from picking up something at expensive airport shops.

Rather than automatically using your hotel's valet parking, you should check to see if there's an adjacent parking lot or garage that offers a better rate. On a recent trip, I was able to park across the street from my hotel for $10 per day--versus $27 per day to valet park with the hotel.

When I travel with friends, we decide ahead of time who's going to bring what. If we're sharing a suite or have adjoining rooms, we don't need multiple hair dryers and umpteen bottles of shampoo. With the weight limits on baggage, we'll need the extra space in our suitcases for souvenirs!

Treat yourself to a golf-ball foot massage. During a long flight, or afterward in your hotel room, take off your shoes, put a golf ball on the floor, and roll it under your foot. It's a great stress reliever. Practice a bit before you try it on a plane, so that your ball doesn't go rolling down the cabin, tripping up unsuspecting passengers.

I unpacked a pair of black slacks recently to find them covered with white fuzz. I didn't have a lint brush handy, so I used the luggage sticker from my bag--the gummy side took the lint right off.

If you're looking for authentic street food--whether you're in New York or Bangkok--don't buy from the pitifully lonely vendor who has no customers. Head to the cart with the longest line of hungry people in front of it. Locals know which vendors serve the best (and safest) food. Even if you have to wait, your stomach will thank you.

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.

Sign up for guest programs at every hotel chain that offers one, even if you haven't stayed at that hotel before or think you may not travel enough to reap benefits from multiple stays. Some programs send coupons for discounted rooms or complimentary room upgrades just for being a member. After signing up for the Omni Hotels Select Guest program, I received a coupon that I was able to redeem for a room in Chicago for $80 per night.

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.

If you plan to leave a gratuity for hotel staff, follow our friend Phil's good advice: Give it at the beginning of your vacation, not at the end. He introduces himself to the housekeepers early in the trip and hands them a nice tip. Guess who always has plenty of coffee and fresh towels?

Once the hotel shampoo bottles I always seem to bring home are empty, I refill them with my own brand of shampoo, conditioner, and shower gel--instead of buying travel-size containers at the drugstore. I toss them, along with other small items (toothbrush, toothpaste, nail file, pillboxes, and a comb), into a medium-size Ziploc bag, and I'm ready to go; the clear plastic lets me find things easily.

My friends and I contribute to a kitty and use that money to pay for group expenses such as taxis and meals. It saves us from having to figure out each person's share at every stop. At the end of the trip, we split what remains.

I bought several items while in London and noticed when I returned home that my credit card number was printed in full on each sales slip. (In the United States, usually only the last four digits of the number are visible.) Travelers should be careful when using their credit cards overseas--don't leave the sales slips lying around.

Before traveling to any city, do a search on the Internet of the city name and the word "coupon" ("New Orleans coupon"). You will find many sites offering two-for-one, percentage-off, and dollar-off discounts. On a recent trip to St.Louis, we saved $100 at restaurants and attractions.

Recycle the long plastic bags in which you receive your home-delivered newspapers. Slip your shoes into the bags before packing them in your suitcase.

Just before I go through airport security, to save time and to avoid leaving something important behind, I collect all loose items--change, money clip, belt buckle, pens--in a large Ziploc bag. I send the bag through the X-ray machine with the rest of my luggage. After picking it up at the other end, I put the things back in place and either toss the bag or keep it for the return trip.

To find the perfect destination with airfare that meets your budget, try Travelocity's Dream Maps travel tool (travelocity.com). Select a maximum fare and a type of destination (city, national park, etc.) and the Web site will display a variety of trips matching that description.

It helps to have a calculator if you plan to do a lot of shopping in foreign markets. When you find something you like, hand the seller the calculator and ask him to enter his best price. It's easy to convert the response into dollars so you know what you're spending. If necessary, the calculator can be used to haggle, especially if you don't speak the language.

Carry the exact change for public transportation. In Venice, we were annoyed when a vaporetto (water taxi) ticket-taker refused to give us our change. Later, we discovered that if you don't have the exact fare, ticket agents make no promises about giving change.

I try to avoid checking any luggage, but the airlines are getting stricter every day about the size and weight of carry-ons. So when I pack, I put any important stuff in a plastic bag and place it in a front pocket. If I'm told to check my carry-on when I get to the gate, I can just pull out the smaller bag and board.

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.

If you even manage to get a cell signal while at sea, your roaming charges will be outrageous. To communicate with your cabinmates, leave Post-it Notes on your door detailing where you'll be throughout the day.

I prefer laminated city maps because I can circle all the things I want to see in a given day with a dark erasable marker. Once I have everything marked, I plan my route and start walking. The next day, I erase the previous day's marks and begin all over again.

Before exchanging foreign currency at the airport, find out if there's a departure tax. At the Bangkok airport, we were very upset- as were travelers around us- to find we had to pay a fee before continuing to our gate. Unfortunately, by that point everyone had cashed in their baht, so the options were a conveniently located ATM, a credit card, or an exchange booth with notably poor rates. When we described this incident to friends, they told us of a similar experience when trying to leave the Dominican Republic.

If you go directly from the air-conditioned ship out onto the open-air deck (which is usually warmer and more humid in most cruise destinations), your camera's lens is likely to fog up. Warm the camera with your cabin's hairdryer on a low setting or briefly leave it out on your balcony so it can acclimate to the weather.

Every year, I get address labels from numerous charitable organizations. I keep them with me when traveling because it's the quickest way to provide my address to new friends, enter prize drawings at shops, sign guest books, etc. It's not only efficient; it can also help spread the word about worthwhile charities.

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.

For the most comprehensive information regarding travel by train or by ship, check out seat61.com. I've found that the site has all sorts of helpful advice for Africa, Asia, Europe, and the Middle East.

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.