Clipart ETC. We used the ones with a children theme to make a lacing name game with recycled cardboard(dry food box). I also thought about making some A-Z blocks with these letters, or a decorative alphabet poster. Instead of printing out each letter individually, I used Google's free Picasa to make a collage. This way all the letters are uniform in size, and print out all together.
Those black dots on the printouts is my printer's fault. The ones at the link are clean. After I took this picture, I colored in the letters in black. It makes it much easier to read.