Tennis balls are an incredibly versatile tool that can be used for a variety of purposes beyond their traditional use in the sport of tennis. From a DIY home improvement project to a fun game with your pet, tennis balls can be used in a variety of creative ways. From crafting a footrest to creating a homemade sprinkler, the possibilities are endless. For those looking to make the most of their tennis balls, alternative uses range from making a homemade catapult to a makeshift basketball hoop. Whether used in the garden or the living room, tennis balls are a great way to get creative and get the most out of your balls.