Yeah, you can get printers now that can print on literally anything that's substantial enough to hold pigment.

The articles I've read about the tech have mostly been about banners, flags, and murals, but I don't read too many journals aimed at the on-demand baker. :)

Wait 'til you get the cake with the Windows error dialog: "SheetPrinter on \\printsrvr has performed an illegal operation and will be shut down. Contact your computer administrator if this error persists. [OK]"