Jamie Pettito is a specialist in turning homemade objects and turning them into cool unique things. Her Youtube channel is full of cool and creative videos, just like the one below. In this particular example, she turns her old CDs into really great-looking jewelry. 

By placing the CD in a boiling pot of water, it makes it much easier to cut. Cutting the CD into small shapes allows her to create things like necklaces, earrings, and even an elaborate disco ball. Most people have CDs lying around the house, but in case you don't, they're incredibly cheap.