To make your own dino eggs, pull back a balloon with fingers, insert tiny plastic dinosaur. This is a bit tricky and did make me smirk as it kinda conjures up sex ed classes from high school. Put end of balloon over the tap and fill with water, take off tap, tie a knot and voila a dinosaur egg ready to hatch or rather pop. If you hold them up to the light you can see the dino baby inside. I gave Flynn a big bowl full, but it wasn't enough he demanded more and then some more. Good fun for a sunny day.