This model was a prototype to explore a minimalist model which incorporated a single LED and battery. I'd like to modify the design to hide the battery and copper tape a bit more while keeping the size to a minimum.
I think this design is simple enough to inspire younger students (middle school) to integrate LEDs with their prints.
The slot in the base accommodates a CR2032 coin battery. There is room in the slot to roll the battery away from the copper tape, to effectively act as a switch.