Use a coffee filter as a makeshift rag. Unlike paper towels, coffee filters are lint free and take up very little space.
Put under bacon, fries, fried chicken etc. to soak up excess grease.
Use to line bamboo steamers.
Place a few tablespoons of baking soda in a filter and twist the top together with a rubber band. Place in shoes, gym bag, closet, refrigerator, or anywhere else that may have developed some less-than-pleasant odors.
Visit onegoodthingbyjillee.com for some more great uses.
Throw a few in your pocket on your way out the door, you never know what other uses you may come up with.