I made these for easter to hide in the house for my kids.
My kids also have a set of 20 eggs to hide in there classroom. 
These where made in tinkercad and where fun to make. 

Free to use and print for yourself or for in your classroom. 
I also added one with no number so you could import it easily into your 3D modeling program of choice to make a fun remix.
If you make a remix please link and mention me in your descriptions.