I love this-- use tall canvas, apply stickers, decal, etc., and spray paint. Remove Decals; hang white lights behind it.
Forget paying $ 50-100+ for a rug! Buy a cheap one and decorate it yourself. This woman used a plain rug from Lowe's (only $ 24.98!), a stencil and white acrylic paint from Hobby Lobby (on sale!), and a foam roller. There are so many different color/design combinations you can use to inexpensively create a unique rug for your room.