LM loves to play with his file folder games, and I found the easiest way in the world to make some: use stickers!
Most of the time when you buy stickers, they come with at least 2 sheets that are the same. Put one set directly on the folder, and the other directly on some cardstock. Voila!
And you might not even have to go buy stickers! I used some that I got in the mail with an advertisement.