No heat, easy hair curling method

This young lady has such a clever way to create curls overnight. It looks easy, cheap, and comfortable to sleep in, as well. I have a feeling my daughter may be checking this out, although she will probably like the decorations in the room as much as she likes the curling method!

Sock-bun curling method:
http://www.youtube.com/watch?v=3FV-YO46E8Y