Temporary tattoos, 3 in a pack. Good size, you can wear it almost anywhere on your body.
This is how to do it: Pull the plastic film. Place the tattoo where you want it and hold a wet paper on top of it for 20-30 seconds. Then carefully remove the paper. Voila!
Hey, challenge your friends to put one one the forehead and see how that would work out in a bar .. 😉