Simple case with lid for 20 half pan water colors and a couple of pencils.
Created in OnShape - document is here: https://cad.onshape.com/documents/096698f5602ff8094f2ace0b/w/67410470c2b1b469f3691b6e/e/ac44ae02b019629a8dcda0b6
19-09-2019 - Edit: Uploaded new STL and STEP files with a slightly improved hinge and without the name on the lid.
Supports required for the back part of the base.
The author marked this model as their own original creation. Imported from Thingiverse.