Homebrew PCBs

I'll bet most of us have done dry transfers at some time. It would be  
a good product if your choice of patterns could be made on a printer.  
Instead of buying arrays of lines and dots made by someone else,  
there would be your own PCB layout made by yourself, ready to rub on  
the board. The people who make dry transfers have to come up with a  
way to make the blank material available to us.