• I like using one I only remember from my dad when I was a kid and I don’t know where it came from, nor have I ever seen it used in popular media the way others have, like the two doors/liar puzzle or the weighted jug one.

    It involves two gold ropes hanging from rings in the ceiling which is high enough to die from should you fall. The puzzle requires obtaining both lengths of rope without dying. I can’t remember the whole thing off-hand (I have it written down, physically in a notebook; but it’s still in a box buried in a closet right now). It’s such a convoluted puzzle that if I hadn’t written the whole thing, and the solution down, I can’t remember it and would never be able to solve it if I ran into it.