What started as an experiment with a simple collar at your first BDSM party ended up with you hobbled and locked in a chastity cage. The next 2 days of teasing and denial were a level of bliss you never thought possible.
I suggest adding a slot machine to this so that the belt opens only if 4 identical symbols appear. And the game time depended on which symbols fell out. From 30 seconds to 30 minutes.