People interested in physical interaction MUST check this incredible resource: the Ultimate Guide to Shooting Rubber Bands by Tim Morgan.

we will discuss the many methods of arming and firing a rubber band. Proper mounting and delivery is critical towards making the rubber band go where you want it to. With practice, you should be able to mount your rubber band swiftly and before your opponent can disarm it.

What is of interests are the tricks and methods to use then in various kind of battles. There are some tricks like the following:

My point is that help thinking about new kind of interfaces or way to interact with objects. The crux issue here is the fact that the affordance of a rubber band is malleable and can be apprehended differently.