@AndrewStacey Do you think I could put up a package on the launchpad site even though I haven't answered the question yet?

@StephanLehmke (Odd, I didn't get notified for that.) Yes, that's fine. I've done it. I often end up mentioning them in answers later on so it's not obvious that I've done it but I don't think that tikz3d and hyperbolic started out as answers, and the calligraphy stuff is only an answer because I asked someone to ask the question!