Eyy, its not Friday yet, but I found an hour to deliberate, so lets do it now. Voting time!
Option 1 - Just like the chains I made, it will fit the standard room (small wall height in build mode). Object + Idle.
Option 2 - Cuffs instead of belts up top, other than that, mostly what you see. Object + Idle.
Option 3 - Not sure about the casters (and the base in general), so might redesign that, but other than that, the cage as you see it. Object + Idle.
Thank you for voting.
First release of the month probably no sooner than on the 10th. Cheers.