I'm not sure if I ever shared this before? Each year I place felt on the bottom of my chairs to prevent them from scratching up the floors. I match the felt to the color theme of my bulletin boards, but more than that I fine it works better than tennis balls. You take a square of felt..fold it over...and rubber band it on! I have only had 2 fall off this year, and my floors still look almost like the first day of school! Just thought I'd pass that tidbit on to you!