For Easter and birthdays, I sometime make eggs filled with confetti, called cascarones. My son especially loves to shower us with confetti. They are easy to make.
First, gather some empty eggs. You don't need them to have a tiny hole or a perfect one. Rinse them and let them dry. I used spray paint to decorate them. Next time, I will spray the paint in the last step, so the eggs will look even better.
Then, take a funnel or make one with a sheet of paper rolled in a cone shape and fill the eggs with confetti.
Lastly, cut some tiny discs of tissue paper and glue them over the hole. I used basic white glue.
Then, if you haven't done it at the beginning, decorate the eggs whichever way you choose. As they will be broken, I suggest something fast and easy. I spray painted them.
Now, you have a bunch of cascarones ready to be squashed in your hand over a friends' head. This will release a shower of confetti and tiny bits of egg shell.
We also throw them at the ceiling so they brake and let all the confetti slowly drop. It's a bit messy but a lot of fun. It really makes for a fun party.