I am obsessed with lumia right now. It seems to be one of the more esoteric lighting techniques. I'm getting involved as best I can, for now!
I took my laser to a bunch of junk stores around the neighborhood a couple weeks ago and tried shining it through all different kinds of glass till I found the effect I was looking for (people probably thought I was very odd indeed!). I found some dinner glasses from the '70s that did great things - very ripple-y. I'm using them on the tours I'm doing with my new band Sound of Ceres. And on our next tour (May) we'll be exploring caves throughout the midwest. What could be better?!