And no this isn't about money. There are lots of things which you may not be using that might be useful to someone. It could be toys your kids don't play with anymore, books you've read lots of times, DVDs you don't plan to watch for a while — anything. Good thing about doing this is anytime you need something that you want to use once, instead of buying if your friends or neighbors have it, you could borrow it . . . and it would save you some money.