Electronics mounts
5.5 mm PCB barrel jack (PJ-002A style) in 2.1 or 2.5 mm pin sizes, with the wall cutout.
Solid Vibes StandardElectronics mounts
Uno R3 (and R4 Minima / WiFi) with the official outline, four ⌀3.2 holes, USB and DC jack positions and the stacking headers.
Solid Vibes Standard