I got this idea from a card my Sister-in-law received so I borrowed her stamp set and made some cards for myself.
The stamp is from Stampin' Up. It is an old set, the name on the box said SMILE. The paper is from Hobby Lobby. I was going to use water balloons, but all I could find was grenade green ones. Found a bag of assorted balloon sizes at my local Dollar General. I also made cards in red, yellow, green, and pink. The pink ones have different paper. I didn't realize there were orange balloons until I was all done, and had put everything away.