I made this box to house the electronics for a led strip project. It has a friction fit area and cutout for these barrel connectors: Amazon.com : 12V 2A Power Supply AC Adapter, AC 100-240V to DC 12 Volt Transformers, 2.1mm X 5.5mm Wall Plug (12 Volt - 2amp - 2pack) : Electronics
The box has a lid that has holes for M2 screws to attach the lid to the box.
I can supply the CAD files if requested.
Supports: No
Print height: 0.2 - 0.3
Infill: <10%
The author hasn't provided the model origin yet.