People get extremely creative when it gets to getting the lighting right. My old mate Ed just tipped me off about one which is particularly weird. But as far as making people laugh, it works. The bonus? it means you can get some excellent lighting for impromptu portrait photography! Basically, you take a helmet, you mount a flashgun on top, and you add a reflective brolly. It’s laughably simple, but it may just work… if you can live with the shame, that is :)
Check out the page by Juergen Specht which also shows pictures taken with the rig, and further explanations, if you should wish to build one for yourself.