Shape Sorter Cube

Children's Toy Shape Sorter designed to ensure that all shapes only fit into their own hole with a re-enforced lid to ensure that a child sitting on it or leaning on it can break it (I have personally stood on it to ensure safety for my own daughter). I have also included finger notches in the top to more easily take the lid off. Please let me know if you find anything wrong with this as I have done a lot of testing and think that this design should not have any problems!