What do you use to project images onto your cakes? I was looking at the kopykake, but it's so expensive. I'm thinking of getting something like this, and at least it will have some other applications too. Do you think I could make this work for a cake?
http://www.amazon.com/dp/B0024I8H42/?tag=cakecentral-20
I'm just a hobby baker for now, but after each cake I do, I'm thinking more and more of starting to sell... but who knows? At any rate, your opinions would be appreciated.

Maybe people don't use projectors anymore?

I don't own a projector, but I know there's a thread on the cookie forum called "Show me your KopyKake Cookies" or something similar. Perhaps there's some info in that thread that will help you.