Well, 16 bulbs and some nice experimentation.  Only the accidental exploding spark one that I'm really pleased with though.  I think the 60 watt bulbs are too bright as they burn.  Next step is to find cheap 40 watt or lower bulbs, ideally as low as possible.  I want to see the line of the filament burning in the shot, not the current star flare that I see now.

Also have some idea's on some more fun to have with electricity and flame, but I might need to do a bit more research on those first.  I'm not an electrician and there's a lot of flammable props in my studio.  I bet the stack of coffee sacks would go up in a heartbeat.