Mix the white school glue and shaving cream in a bowl until well combined. The mixture should be fluffy and smooth.
Divide the mixture into smaller containers if you want to make different colors.
Add a few drops of food coloring to each container and mix well until the desired color is achieved.
Transfer the colored mixture into small squeeze bottles or plastic bags with a tiny hole cut in the corner for easy dispensing.
Use the puffy paint to create designs on paper or cardboard.
Allow the paint to dry overnight. It will puff up as it dries to create a fun textured effect.