Clever Substitutions: Inflatable Exercise Ball for Your Office Chair

Here's one you might not have seen before. How about replacing your clunky office chair with one of these bad boys? These inflatable exercise balls can be found for pretty cheap around your local fitness store. Plus, you can do some sit-ups and all types of exercises during downtime - something that was darn near impossible with that office chair laying around.

Anyone give this a try? Looks like it could be pretty fun. Maybe you could even run this by the boss and he'll replace everyone's Aeron chairs with colorful balls all over the office.

[via Killyp at Macrumors]