You can usually just pay to have a sheet or two printed out at Kinkos, but my gf's job has pretty expensive printers involved with it as it's all engineering/drafting stuff and so she prints me junk all the time (decals, Target coupons, you name it).
I've had blueprints to my never-ending projects printed out almost perfectly to-scale. Usually some cutting/pasting necessary, but you get that first representation of the scale of an AT-AT's hull or an X-Wing's overall size compared to a figure. Best place to jump off on projects like that.
I wish people would crank out some wicked decals for Star Wars... Death Star boxes you could just print out would be nice to me, as would other items like that. Simple stuff for on the display shelf, ya know? Nothing elaborate, just some decoration. Death Star boxes in orange, powder blue, dark blue, black, grey(s), white, etc. Nice filler for all shelves.