I used to make shunt resistors out of a pencil and a piece of paper. Rub pencil all over paper, cut strips to size of required resistance.

EDIT: I mean megaohm resistors not shunt resistors. 20MOhm for DIY theramin.

AI is great for when you’re typing out 30 slight variations of the same thing, and you can just be like “see what I’m doing here? Do it for the other 30 variables” and it does it just fine.