My first attempt in Fusion 360 on a light box. Been wanting this one for awhile and thought I should share.

I've made the front panel smaller height, but the insert part is wide enough for LED strip lights.

I used ‘add negative part' in Bambu Studio to place the back hole for cords. I use a 22mm cylinder to fit the 22mm Rubber Grommet. Looks clean and makes it easy to install.