Rubber Band Can Be Formed

This is a traditional art, well.. Not really traditional.. Using rubber band to form shapes- by twisting, pull,etc. Children usually like this art, because it's simple and easy. This art is different with the Ayatori art, Ayatori arts are using strings not rubber bands. This is really popular in Indonesian school, most of children usually can make this art.
Of course! Rubber Bands! I suggest not to use new rubber band, because it's really hard to stretch it. Used rubber band will easier to stretch
If you've ever been shot with a rubber band then you know it has energy in it - enough energy to smack you in the arm and cause a sting! But have you ever wondered what the relationship is between a stretched rubber band at rest and the energy it holds? The energy the rubber band has stored is related to the distance the rubber band will fly after being released. So can you guess one way to test how much energy a stretched rubber band contains?