so, current cart is this:
1-1.5 watt 445nm blue laser diode and lens (seller says will fit in a 5.6mm t0-18 aixiz housing)
aixiz housing
12 v momentary push button switch
this driver: 2 Pieces 445nm 450nm 1W 2W Blue Laser Diode Driver Constant Current Protection | eBay
and a 18650 battery from...