Custom Emitter

Hey everyone! I was wondering what it would take to create a custom emitter. I'm no good at code, that's why I'm here! Anyway, I want to create an emitter that is controllable with the mouse, and emits a random primitive geometric shape (excluding the capsule and plane) and, once emitted, acts apart from the emitter, reacting to gravity. Basically I'm trying to produce a stacking-like game. I can't seem to get any programmers interested in my game yet, but I'm still holding out. If anybody can help, that would be awesome!

Thanks so much everybody!

Peace!