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 a pillar with chains. I tried to put a "top" on the pillar, but it detracted from the look. Made the chains harder to see.

I also made a pillar with a few bones on the bottom, just for kicks.

Based upon Human Hand Bones - Thumb by siderits
Low Poly Fantasy Tabletop - Alliance Advanced Units by Davision3d (in the picture)
Skull by bothacker