Foam rubber is found in many products from mattresses to furniture to insulation. Disposing of old foam is difficult due to a lack of recycling options.
If you have scraps of foam rubber, check out ehow.com for creative reuse ideas:
Polyethylene foam (also called PE foam) used to cushion electronics and other products during shipping can be recycled by finding a Recycle PE Foam program:
Find a Styrofoam recycler:
Recycle the components of a mattress and make a bookshelf from the wood strips: