The mouse hasn’t undergone many changes since is creation. Here’s the most drastic change it’s ever had. See the ball there? Put your butt on the ball. Thats right, now wiggle around. You’re moving the cursor with your butt. And that tank top is turning me on… Sorry about that. Wandered off into a weird fantasy there.
So, yeah this is a ball that lets you use your butt movement as a mouse. Brought to you by the kind folks at Interaction Architecture. The name says it all. Apparently they are intended for places like airports. Maybe that’s because some places are fidget inducing? They aren’t available to the general public.