Stability ball as office chair

bcsrule

I am getting out of my office chair and walking around the parking lot and building every chance I get, I'm not using the tube to send things over to the other building, I get my butt up and walk it over. I'm looking for anything to help me achieve my goal, and change my habits, and I was wondering about Stability ball as your office chair. Is there anything to this in working the core muscles while working? Anything thoughts?