My husband and I love tennis. In fact, we bonded over the idea of tennis and were thinking of having our first date as a tennis game. So when I saw this article on Lifehacker, I thought it was creative especially for old worn out tennis balls.
I love the idea of reusing them for a new silly purpose. I just makes me laugh when I see them. I think I will have to search our garage for some old balls to try this one day.