Over spring break, we had N2 dye Easter Eggs. They really enjoy it. Natalie likes to keep dying eggs after all the eggs have already been dyed so she redyes some of the eggs so that we have strange colored eggs. We tried coloring on the eggs with a wax crayon that came with the kit but they didn't press hard enough for the most part and it didn't show up. I think there may be one egg where they pressed hard enough.