Well, over on The DMs Craft, Sam 'the beachcomber' said:
Scatter terrain for a torture room:
bench or table with tongs, clamps, knives;
a rack like in Hero Quest;
a iron maiden;
wall section with chains and cuffs;
or pillar with chains and cuffs.

Here's an iron maiden. I made the spikes big and conic, in the hopes that they will print without support. (fingers crossed)

Based upon Russian Nesting Doll by cait008
Venus bust by richgain
Low Poly Fantasy Tabletop - Alliance Advanced Units by Davision3d (picture only)