Gina writes “…my crafty father-in-law had built a lighting system for his kitchen pantry out of Christmas lights and a Timex watch holder. He drilled a hole in the plastic watch holder just under the tension flap that holds the watch up, and inserted a reverse switch inside the hole. Once the switch was connected to the lights, when the pantry door closes, the circuit breaks and the lights go off. When the pantry door is opened, the circuit closes and lights go on and Mom can see which can she’s plucking off the shelf.” Link and photos.
DIY watch holder pantry light