Kind of funny (for me) that I would come across this idea this morning. See last week I was using my Mod Podge and had poured some into the center well of my plastic paint palette. Well, I forgot to clean it out and by the time I realized it, it had hardened in there. After some convincing, I was able to remove it and it came out in one big piece. And it felt like a window cling. I thought nothing of it. Luckily, Amy of Mod Podge Rocks did think something of it! Check out how she makes cool glass clings from mod Podge and paint!