L
larrysb
Guest
Until you cobble one up, or purchase one, your light bulb isn't such a terrible idea. Me? I'd go for something that consumes higher current, like a sealed beam headlight lamp.
I use one out of the pile of headlights in my garage that were changed due rock chips and BB-pit-holes in the glass over the years.
The filaments are not as themistor-like as people imagine.