Make yourself some organizers for your socket set! Customizable, modular organizers are a great use of 3D printing.
This customizer is a set of socket organizers designed in OpenSCAD for storing socket sets of all shapes and sizes compactly and conveniently in your toolbox. The idea is to use a rail made of metal or wood and print socket holders that slide along the rail. The OpenSCAD files can be adjusted to rectangular or circular cross-section rails of any size, as well as any drive size sockets. Standard STLs are included for 1/2", 3/8" and 1/4" drive sockets, with either 1/2" by 1/8" rectangular rail or 3/8" circular dowel.