- Bulb remover - Use half of a ball to remove a warm light bulb from its socket.
- Comforter fluffer - Speed up the drying time of bulky bedding by tossing a couple of tennis balls in the load.
- Spa tool - Roll sore feet over tennis balls for a soothing massage.
- Makeshift safe - Cut a slit in a tennis ball, then place valuables inside. (I don't recommend doing this though, what if your dog decides to play with it? Putting valuables in a tennis ball is like letting your 5-yr old search for life insurance rate by himself!)