Should I just do cute ones, like chibi animals or something or offer full sized characters? I feel like the former would bring less people than the latter.

That really helps, to be honest. I know it's a lot harder than it looks and it already looked a bit hard, haha. But I'll give it a go. I draw random characters all the time and since I probably won't end up using them all, I'd rather them go to a better home.