This asset collection includes various objects typically found in a dungeon environment:
Here you can find the whole thing under a CC By license: https://hub.virtamate.com/resources/dungeon-assets-cc-by.44667/
Human Bones: Realistic 3D models of scattered human bones, adding a chilling...
I have converted the Nippleclamps for you and provided a demo scene
https://www.deviantart.com/noone102000/art/FREEBIE-BDSM-Nipple-Clamps-and-Chain-726902826
unchained.assetbundle which unfortunately I forgot where I got it from
and the wonderful Erica from RenVR...