I was in scouts most of my childhood and I still find myself using the knots I learned around the house. Even though I just found this website after seeing your post, I think it’s just what you need: https://www.animatedknots.com/complete-knot-list

“This is definitely not lupus.” (Google translate)

I’m in the same place as you with my Ender 3+parts. I’ve found it’s not worth trying to list as anyone in the market would just consider a better one.

Have you thought about donating it to a school or library? It would get a new life and you could deduct it on your taxes.