LilypadArduino Button Board - Momentary Push Button Switch

Lilypad Button Board - Momentary Push Button On/Off Switch – Control Your E-Textiles Project and Save The Battery

Quarton VLM-520-73 LPA Green Dot Laser Module (Direct Green Dot, 36V)

Panasonic CR2-2PK Photo Lithium 3V Batteries for Mini 25, Mini 50, Mini 50S, Mini 55, Pivi MP-100 and SP-1- Silver (Pack of 2)