C-casette case organizer

C-casettes are in the edge of landfill. Inspired by [mschiller's CD/DVD case organizer](http://www.thingiverse.com/thing:1564608) I decided try to lengthen casette cases lifecycle aswell. With a little effort this part is supposed to convert your c-casette cases to small parts organizers.

Given STL-models fit to TDK and PolyGram cases (lid cavity inner measures 103x13) and maybe more. The SCAD-file is included to modify measures for other cases and number of compartments.