Check out coloring books online. A few years ago I wanted a cartoon character and found masses of them. Lots of them are on sites where you can enlarge the pictures and print them out. Or else you can print them and enlarge them on most home printers.
(Okay, I've had mine 3 or 4 years, lost the owner's manual and don't know how to make it print anything from the scanner, but it will work on orders from the computer.)