This mask got two seperate shout-outs from stage at a VNV Nation concert, which was pretty cool.
The WS2012 LED strips are cut into segments, wired together, and held in place by unseemly amounts of hot glue.
The mask is controlled by an ItsyBitsy M0.
Power is supplied by a 1200mW LiPo attached to the elastic headband. That big of a battery ended up being total overkill since the LEDs are only being driven at about 1/8th brightness.