I've done some work with a CO2 laser in the past that could do this quite nicely. It's basically a carbon dioxide laser mounted on what looks like a plotter. You can send it anything that you can send to a printer, changing the colors alters the laser power (depth of cut), so you could engrave or cut all the way through certain materials.
I think the startup cost for this equipment is reasonable these days, but I expect it may be difficult for Smarthome to make a profit doing this?
Seems like the logistics of taking the orders, getting them manufactured and then back to the customer for a reasonable fee wouldn't leave much room for profit???
Paul