This a 4 x 3 gridfinity base/gauge holder that holds standard 6 unit tall bins and a screw gauge that is 5 mm thick. I use it with this imperial screw gauge and these gridfinity labeled lightweight bins. Allows one to use the gauge with out holding on to it to size the screws before placing the parts in the correct bin.

This base  can be printed in PLA or any other filament. I printed mine using a 0.6 mm nozzle with a 0.32 mm layer height. Minimal infill and no supports are required. Print time was less than 4 hours and cost less than $4.00 US.