Things You'll Need
Instructions
Order blocks of low-density foam rubber from an art store or foam supplier. Check the phone book, Thomas.net or Alibaba.com for suppliers. Craft stores also carry sheets of foam. Any low-density foam will do, even the foam used in eggshell mattress pads.
Cut the foam into strips and blocks using a pair of scissors or a foam cutter. This machine cuts foam using a hot wire, and it is found at a craft and hobby retailer. Make the strips and blocks at least 1 foot long and several inches wide. It does not matter if the strips are different sizes.
Mix the foam strips together and dump them into an above-ground swimming pool. It will take less foam to fill a smaller pool but it will not offer as much cushioning. So take care when jumping into a smaller pool. The deeper your foam, the more cushioning it will provide.