I was thinking something with those inside it so when u stop it doesn't, but it's not the same feel you'd get from electronics I assume, and it would require you to move.

Just thinking if there was an anal toy with a ball inside it that rolled around. (Like a balloon with a bouncy ball in it) it would be a great sissy training toy. The pleasure heightens when you move so you have to get pretty good at moving your ass. Maybe it's just me though.