"Nah, heating stone is too optimized for max pain per unit injury. Though I'm going to be really amused in the case where the relative difference in our apparent pain tolerance was off by four bits because you were sixteen times less damageable by the heating stone, though, to be clear, I'm not under the impression I'd have otherwise been able to compete."
"Man, I can visualize exactly the mechanism I want to set up here, to put a weight on top of a vertically held knife and push it downwards. But there's no snaptogether pieces I could use to make it quickly... oh hey, that spell you use to feed yourself grapes. Unseen Servant. Have you got one of those around or prepped, that you're willing to use on this, and does it have a max power output that would be enough to injure yourself using a knife at that max power?"