My granddaughters love to make things, they know the word crafts. This is a very easy craft for young children.. This does need to be supervised by an adult. Make sure to check the glass ball tops for any sharp broken glass edges. Make sure you are in an area that is carpeted just in case one of the glass balls rolls off the table or out of little hands.
Package of glass balls they sell them at crafts stores like Micheal's, hobby lobby
Several bottles of acrylic paint like Folk Art in colors of your choice
Glitter for decorating the out side of balls if desired