Mailing labels are pretty awesome. You get a ton for cheap and can color on them. They make really great stickers. I've been doing sticker cartoon graffiti because it's non-toxic makes people smile and can easily be removed by the popo. It's like a compulsive thing. I can't help to put smiley stickers on everything! Also fun idea is using coloring book print puts from Disney's website And printing them on mailing labels. That way when you stick it, it's like a puzzle to put back together.