1. Probably every 2x2-7x7 ever released including different colors, stickered/stickerless..
Although ofc there's an endless amount of 3x3s all over the world. What I mean is more like speedsolving related puzzles. So budget cubes yes, v cubes yes(historical relevance) but picture cubes or dollar store crap/cheap no name cubes no.
2. Every NxNxN variation there is, from 1x1x3 up to god knows what's out there.
I don't even solve these but they're cool.
3. All sorts of 3x3 shape mods. Mirror blocks, fisher cube, you name it. Literally, because I don't know the names lol
Also probably all the oskar cube type puzzles. Basically if it looks like a cube, me want