Flash tubes are pretty neat. Neon tubes are also pretty neat. These particular tubes were used by none other than Harold Edgerton, pioneer of flash photography. When I found out that these guys were going to get pitched, I figured I'd better do something about it, and night lights seemed like just the thing. More to come, once I get around to designing a good controller for mine, as I've snagged myself a matched pair of tubes, and would like them to do the whole automatic turning on and off thing.