I keep meaning to play with both. I don't know how to structure a project around it, though. :(

For fonts, I think it would be fun to basically make a tiling font where you can basically make something like a dragon tiling by just playing with the letters.

And kudos on that calculator! Sounds fun. Boo on the TA for giving you a C. Presumably it could be executed. When I was a TA in college, that would go a log way to getting a better grade. My not understanding something was a problem on me, not any student.