This was a fairly quick simple build, some dolls house LED chandeliers soldered onto battery packs with switches. There were two different types that I tried one with a cold white light and one with a warm white light.
I also tried two different types of battery packs (at the back of the image below) one of them a AAA battery pack with integral switch, one of them a button cell battery with integral switch. The smaller button cell box is on a shorter cable so that it could be easily hidden in a wig/hat/hair. The larger battery pack has a longer cable to be run down the neck and be hidden in clothing.