I used to have a DIY listening lamp that I made in 2012, IIRC. 2 jumbo blue LEDs. Radio Shack was still a brick and mortar store back then, so I bought the LEDs, diode bridge, filter cap, voltage regulator (LM7805), heatsink and board. No transformers in stock, so I pulled one out of an old, broken radio I had. I plugged it in the back of my receiver (switched outlet). This way, it was automatically on and off with the receiver. It emitted the perfect amount of light. Listening in the dark was still dark, but I didn't spill what ever beverage I had. Unfortunately, I lost it in my travels.


Have to use bulb extenders for the lo-watt bulbs I prefer for such things.

