Holder for glass print beds for FlashForge Creator or other 6"x9" printer

Right now I have a Solidoodle 3 but my plan is to sell it and buy a FlashForge Creator. The Solidoodle 3's print platform is 8"x8", while the FlashForge's is 6"x9". This puts me in an interesting position: I can currently print something bigger than the print surface on my next printer, at least in one dimension. Which is neat because normally the one thing you can't print on a printer is a holder for the print bed, because the holder has to be bigger than the print bed. At least unless you