I love projects like this. where pretty much all of it is left up to a child’s imagination. You start out with a piece of adhesive-backed craft foam that is cut into a large egg shape. Give this to the child with a variety of craft and/or household items and let them have fun decorating the egg picture. The 3 pictured here are made using buttons, chenille stems, and colored cotton balls.
Read through the tutorial posted on Gummy Lump.