STL files for 3D printing of a box for children to fit the diffrent shapes. Serveral versions of the FitIT box has been tested and loved by serveral children. The diffrent shapes creates diffrent levels for them to learn over time. The S shape is the highest level since it only fits in one way. It is suited for ages between 0-3 years.

WARNING! - Its obviuos but: If you print this make sure you print with enough walls and infill for it to hold for anything. After printing, test it to make sure it is a solid peice and often control all the surfaces to make sure the toy is intact. If the toy would get damaged throw it in the closest recycle bin and replace the broken part to insure your childs safety.