You may remember the often-discussed tennis ball headphones or these 99 extraordinary uses for ordinary objects. Those were pretty great, but it makes you wonder what else these little bundles of latex and wool can do. Since they wear out and lose their bounce quickly, most tennis balls simply end up in the garbage when they stop being useful on the court. If you can’t stand to throw them away, they tend to pile up quickly - so what can you do with them?
Link: The Life Hackery