I'm using this modular Rack: https://www.printables.com/model/141927-2u-modular-raspberry-pi-rack

As I don't have enough raspberry pis to fill it but have a jetson laying around I modified the tray to hold the jetson nano. Attach the SSD first if you plan to use it as the screws for the SSD will be blocked when attaching the nano. Use the top and bottom screws only, I just left the mid ones in for support.