I love making technical code like calculators (which I always add to my "Matheranator" project) and simulators like my water simulator series. I'll usually respond to messages decently fast as well.

Right now I'm working on my 3D renderer, and maybe even some games to go with it

BTW, https://en.scratch-wiki.info/wiki/List_of_Block_Workarounds is the best, 10/10.