A low profile Deej enclosure, because I did not find any out there.

For Arduino Nano 75mm  X 8mm deep X 9mm wide PCB mount sliders off AliExpress.

No screws, just use some PVA or hot glue to hold together.

The icons are recessed 0.1mm - works nicely with multicolor painting tools.

Assembly instructions - solder the wires to appropriate slider pins, then fold down all the pins. The sliders should fit flush within the slots. Wire it all up, check if the cover fits. Finally apply some glue to keep the lid in place.