These are, of course, cheap electric tea lights bashed and painted for appropriate dungeon ambiance. The LED lights in these things aren't very bright, but they flicker a bit. A subtle effect, but it gets the idea across.
You may have noticed that the old robot used for scale has been replaced by a more fantasy suitable miniature. The minotaur shown here is actually a Pendraken 10mm figure, but he's a big 10mm, and works well as more of a human sized beastman when used as a 15mm figure. He's about 15mm to the eyes, to give a better idea of scale. There are quite a few 'big' 10mm figures that would work well as 'normal' sized 15mm figures. I'll have to show you a few of the ones I anticipate using.