Inside the 3D printed frame of the GlowBlaster is a 5 mW 405 nm module, an Arduino Nano ... 12 mm tactile button which causes the Arduino to fire the laser and sprinkle in a bit of theatrics ...

This is exactly what [bitluni] did in a recent video, meshing together said laser diode, UV-sensitive PLA, stepper motors and two mirrors with an Arduino ... MEMS mirror modules or the like.