For our annual family Easter egg hunt I made some cascarones this year. After I'd made them I found a dozen at Wal-Mart for $1.99 so while they were fun to make, it's really pretty cheap to buy them already done.
First I cracked a small hole in the eggs, emptied the insides and let them dry out for a day. Then the kids and grandpa colored them. You have to hold them down into the dye as they are hollow and float!
I filled them with confetti I found for $1.00 at Wal-Mart with the Easter stuff.
Then I glued on little tissue paper squares.
When you found one in the Easter egg hunt, you got to crack it on someone's head. The kids loved them. They mostly cracked them on their dad's heads and grandpa.