I saw an interesting item a couple months ago at the antique mall and wondered what kind of interesting torture device it was, as it was not the most pleasant looking pillow of sharp nails I'd ever seen in my life.
They are apparently called
hatchels, and still look like great torture devices.
That link also has some other great items, like a musical niddy-noddie. I'm not kidding - that's the name of the gadget. There's also a yarn twister that looks a bit like a cross bow.