There maybe a set with these already, but what about:

Gallows:


Guillotine:


Stocks:


Iron Maiden:


You know, that kind of fun stuff!

Lets see....

Gallows are in: Dinas Ffordd: The Seeds of War

Guillotine - I think has never been done.

Stocks: I could swear I saw a standee in stocks at some point.

Iron Maiden is in: Shellendrak Manor

Also for other items:
Dungeonworks Classic, Chunky dungeons/Minichunk and Missing persons all have more items to fully fill out your torture room.

I know that's quite a few sets, but well... You know you want them all

I don't do much fantasy/medieval but that stuff would look great in modern Wax Museum or even a uber scary basement...

Your just the guy to bash em' too!

Hey we deffinetly need a pack for that stuff. But instead of just that make it like the evil side of the castles. Ad ses pits and heads on pikes. Add filthy jail cells with mats and everything. Heck add a gibets cage. Just make it so people can play in the darker side of things. I would buy it and would love giving my players the DEATH SENTENCE!!!