A clever way to use a tennis ball

We accept tons of different items for recycling year-round - tennis balls, shoes, corks, crayons and more - but spring time always brings some extra options into the mix, like @smartwool annual sock recycling bin (turns yarn from old socks into new socks!) and @hydrapak (upcycles squeezable sports bottles into new composite construction materials). Spring cleaning just got way more satisfying 😎 | Sports Basement