I’ve always loved the idea of using old things for creating something new. Not only do you get rid of clutter, but you also get a completely unique little thing.
Have a broken chair? Paint it and hang it in your bathroom.
Or turn your old books into charming vintage shelves.
If you like sewing, you can use this tutorial from Crafty nest and make pretty summer totes out of your old tank tops.
If you like reusing old things, you might want to check out this book from Real Simple. It is full of innovative ideas for old things you can find in your house.