Need to light a hard-to-reach candle wick, but don't have a long match? Use a piece of uncooked spaghetti to light the wick.
If you've sealed an envelope, but forgot to include something, don't rip it open. Instead, stick it in the freezer for a few hours. It'll pop right open so you won't have to waste another envelope.
When you're done using the roll of tape, fold the last quarter-inch down and make a tab. This way, you'll never fumble finding the end again.
Keep a "donate" box in your storage closet. When you come across anything you don't use anymore, toss it in the box. When it's full, donate it.
Clear your cookies on your computer before booking vacations. A lot of travel sites will track the number of times you check flight prices and may actually inflate the price of your trip. By clearing your cookies, you look like a first time visitor and will get a better rate.
Run out of AA batteries? Use AAA and fill the gap on the '+' side with aluminum foil.
Don't store your medication in your medicine cabinet. Bathrooms contain a lot of moisture from showers and baths, which can shorten the life of your medicine. Store them in a dry, dark and cool location instead.