Before you clean out that dryer lint trap, you might want to read these interesting ways to reuse the stuff.
1. Spin it (like wool) into thread and use it to knit or crochet something fabulous. Here's a great little video introducing the spinning process.
2. Use it to make fire starters. This is a recycling two-fer, as you can stuff lint into sections of old toilet or paper towel rolls or you can go DIY crazy, and do the cardboard egg carton and melted paraffin route.
3. Use it to make clay. There's a no-cook method that children can make and also a cook method that lasts longer. Recipes for both can be found here.
4. Make art out of it. Before you scoff, check out Studio Capezzuti.