I have been working on a group of plague marines and in the distant past, I saw an article about a dude putting lights in a Tzeentch mini and was inspired. So I put one surface mount LED in the head of the Nurgle champion of this squad. I also used tester's clear parts /window maker glue to put lenses back into the helmet. The battery is in the base along with a switch that is way too small. You can see the blue switch out the side of the base. I had lots of fun getting the wires run thru the legs, but it was worth the 3 weeks of prep and painting. Here are some links:
http://i208.photobucket.com/albums/bb15 ... G_1822.jpg
http://i208.photobucket.com/albums/bb15 ... G_1820.jpg
http://i208.photobucket.com/albums/bb15 ... G_1817.jpg
Enjoy now, cause the plague is coming!