cheap ball chair, originally uploaded by katatak.

I’ve been looking for a replacement chair for working at my computer. J’s got a great one (AK Octane), but it doesn’t seem to be available anymore (nor, according to many message boards, is their ‘new model’ that seems never to have come out).
I’d been intrigued by all the exercise ball chairs that many people swear by, but was concerned that 1. it would be too short (my desk is a little high and I don’t currently use a keyboard tray) and 2. I’d get tired of it like I did the kneel-chair I still have in storage.
I already had an exercise ball, so started looking around and came up with this setup. It’s the base of my papasan chair that, though I love it, I don’t use very often and is starting to fall apart. Although it’s somewhat worn, the bottom is a perfect fit for the ball and it comes to nearly the right height. I’ll need to pump the ball up just a little more to make it a tad higher, and/or I’m considering some casters to make it more useful for the office.
So far it’s treating me well and is helping out the pain I’ve had in my hip for the last few days. But if I change my mind, at least I’m not out the $70 (the price that the ball-chairs on Amazon were listed).