Harbor Freight 1/4'" and 3/8" socket treys with optional 10x5mm magnets in the bottom to hold the sockets in. The magnets also keep it in place in the tool box or on the fender of a car.

Started with these two sets:

Since I store standard and metric sockets in seperate drawers, each tray is made for all 20 sockets. I then installed the 10x5mm magnets and added some superglue just to be sure they stayed.

Printed using PLA with no supports and 20% infill