I'm not sure about you, but I've always been fascinated with the exercise balls that folks would bring into the office to sit on. I know that they are supposed to promote a strong core, but seriously... it's just because sometimes it's nice as a grown up to have an excuse to bounce on a ball!
As an alternative to the balls, how fun are these ErgoErgo seats? For only $100 they also rock and bounce to promote an ergonomic alternative to boring office chairs.
Go ahead and indulge your inner child... add some bounce to your day!