Can you use a balance ball chair with wheels and a backrest? Similar to the one at the link below. Wont fit under my new desk. (The bar that holds the ball in place when not using it is missing.)
I also have one or two pumps for pumping up the chair every few months if it gets softer that I can include.
https://www.amazon.com/dp/B0007VB4NE?th=1
Fair Chance Policy: I’ll wait before choosing a recipient to give more people a chance to reply.
Ball chair with wheels and backrest (Downtown Silver Spring)
This offer has been gifted to someone and is no longer available.