Thanks so much for the replies everyone. The set is probably going to end up a few feet across at most. It is rather small. I think the maglight will be the most reasonable option for my situation, I'll go check out my options tonight. The smoke idea is good, I will try that (and try not to inhale through the straw). I suppose I could shoot a bit of fog and let it dissipate enough that it doesn't make the shot cloudy, but leave some scattering material. I appreciate your suggestions.