I have printed tons of boxes of various sizes to hold buck converters, connectors etc. The one I use the most is a box just a bit bigger than a 6 bar barrier strip. I use it to connect DC wires from a PSU to the props. Velcro it to the back of the prop and I have a water resistant connection. I have also printed a bunch of hangers that drop into the top of a rain gutter and support a 3/4" PVC pipe hanging in front of the gutter. Works great in high winds. Requires no tools to install and makes my hanging props easy to put up / take down. Printed spacers for my tomato cage matrix to hold my WS2812 strips at an even distance (33mm) giving the matrix a more uniform look. 10 strip tree toppers for my mini and mid trees.