Cascarón
Cascarones are hollow egg shells, filled with confetti, meant to be thrown or broken over someone's head making confetti scatter everywhere! Cascarones were popular in Mexico and have recently regained popularity in South Texas. They are used for many different occasions.
How do you make Cascarones? Using a pin, make small holes in both ends of a raw egg. Blow into one of the holes to blow out the contents of the egg. Rinse the eggshell and let it dry thoroughly.
Make one hole slightly larger, if necessary and fill the the egg shell with confetti. Glue a small pieve of tissue paper over each hole and paint the egg or decorate it with colored tissue paper.
Surprise a friend by breaking one of these eggs over their head and don't forget to clean up the mess!
Copied from a teachers card in High School Spanish class.