I created this some time ago so I could store my fittings in a way that made them easy to organize and find when needed. It also prevents damage from them rattling around in bags as their surfaces are often fragile. The spacing is wide to allow you to store the largest fittings, and to give you space to remove them. Tray works double sided, so each tray can store up to 18 fittings.

G4 threaded.