Homebrew PCBs

I have been pondering a bit about the feeder tray for the ink jet 
printers.  If you recall, Stefan came up with a really good method - 
leading edge has a long stop and a center mark.  

I have yet to come up with a material suitable to make this from.  It 
would need to be thin, and somewhat rigid.  Furthermore, it needs to 
be pulled through the printer with ease.  On my Stylus 850 is has a 
rough-surfaced metal roller for the main feed roller so I am think 
along the lines of a plastic tray. Anyone else give any thought to 
this yet?

Chris