Hexagon shaped Nano leaf rip off Arduino powered lights. The lens snaps into place nicely, and there are pass throughs on all sides for wires, just punch through the thin outer layer. I cut it pretty easily with a box cutter, and it is large enough for wires, and smaller connectors.

No supports, but a clean first layer is important for the lens. Normal lens sits flush, thin lens sits inset.

You can always use the lens a template and cut out your own from another material.