Following changes required to version 1 of the Display enclosure.

• minimize standoff height
• make walls to extend to the LED strip and OLED display
• reduce wall thickness on LED strip standoffs on board side for clearance
• move USB hole away from face
• redesign the buttons
• reduce OLED hole in width and height

Holes in standoff etc work well for 2mm and at least a few turns of 2.3mm

Used 2x5mm for LED to enclosure and 2.3 x 10mm for two holes of the Feather/Wing to the enclosure.  Really need longer 12mm or 14mm.

Enclosure is serviceable as is.  See photos.  (Note: I did not yet install the side switch for power)