Scribblenauts Easter eggs

Tame dangerous creatures (no peroxide/food)
Type URANIUM and you'll get a small rock. Drop it on dangerous animals such as dinosaurs and dragons, they will sleep. When they wake up you can ride them like other creatures. It's the same effect as peroxide or feeding 3x, but you don't have to get near the animal. If you drop it on a human or an Edy the person will turn into a strange, friendly green zombie.