My earlier nozzle storage system for the E3D box was good, but lacking in a few ways. This resolves those issues.
I have added nozzle indicators to identify nozzle types and diameters. The indicators are made of spare filament and provide a coloured dot by each nozzle.

I have also ditched the (fairly useless) E3D spanner and replaced it with a spot for a standard socket (6 or 7mm) and a 7mm hex drive.

It's a tight fit, as it's designed to sit under the box lip. Insert it square, rather than at an angle. It will push the box sides out a bit before they snap back.