Freezer or wax paper
To make your own heart clings:
Step one: Pour 1/3 cup Mod Podge into a bowl.
Step two: Add paint (about a teaspoon) and glitter to Mod Podge and mix well.
Step three: Use a brush to apply the mixture to the freezer paper. Paint it into a heart shape.
Step four: After it has dried, carefully peel the heart off the paper. It will cling to any glass surface.
Now you can go heart bombing! Leave your heart on cars, mirrors, windows, and any other place with a glass surface.
I can't wait to hear your heartbombing stories!