Leftover foreign currency -- whether it's Japanese yen or Mexican pesos or Canadian dollars -- doesn't have to live stashed away in a junk drawer at home. Collect all of your mixed foreign currency -- coins and bills -- from any country and donate it to UNICEF. Their Change for Good program takes your foreign currency and uses it to fund programs to support children all over the world who do not have access to education, food and clean water. Send your money to Change for Good Program, U.S. Fund for UNICEF, 125 Maiden Lane, New York, NY 10038. Include your name, address and email so they can send you a receipt for your donation for tax purposes.

ANDREWS MCMEEL SYNDICATION

Do you really need to rent a car when you travel? Not only can it be expensive to rent and park the car, it may be unnecessary in large cities. Research ahead of time to find out if there is public transport from the airport in your destination city. Look at rail and bus lines, and use apps to help plan your itinerary. Not only will you be greener, you'll save money and a lot of time, too. Taking a train from Newark to New York City, for example, is often far cheaper and faster than taking a taxi.

ANDREWS MCMEEL SYNDICATION

You can compensate for emissions when you fly by buying something called "carbon offsets." These purchases use your money to "green" your travel by supporting forest protection or tree plantings. But since the carbon offset industry is unregulated, it's important to make sure your purchase actually does what it was intended to do. Look for carbon offsets that are endorsed by independent groups like the Climate Action Reserve or the American Carbon Registry.

ANDREWS MCMEEL SYNDICATION