Originally Posted By: adam2

A plastic battery holder for 2D cells, with a 2.4 volt 0.7 amp flashlight bulb.
The bulb is soldered to two short pieces of wire, which are soldered to the terminals of the battery holder.
No switch is needed, insert batteries to light, remove batteries to turn off.


Great thinking!

Those could easily be upgraded with LED replacements, such as this:
Niteize LED bulb replacement
The manufacturer claims 50 hours on 2 D cell batteries. Unverified, but likely.

The bad news is that the cold white LEDs will not create the atmosphere as a dimmed incan bulb when the family huddles up for noodles in the living room...