Had a small harbor freight screwdriver set with no good way of storing them.. here is version one.

STL Files have already been run through netfabb.

I printed this on my Robo3D R1 in PLA with .2mm layer height.

Included the Moment of Inspiration file in case you want to modify or the tolerances are off on the lid. I think I left .2mm on each side. Although MOI uses NURBS and not meshes so if that's a problem I can try to export to another format and upload.