I have had a yoga stool for 10 years and it is perfect for the office it goes at different heights.
I bounced on it all day it turns around in circles but of course does not take up the space a ball does.
I purchased it from a “Relax a Back Store”
It’s very attractive a will be with you for a life time of bouncing.
If you look the store up there are quite a few states they are in.
Probably on line by now if not in your area.
Good luck you will be very happy if you decide to buy one.
I give it a 10