30W Fixed Lens Laser Engraver Module Kit Laser Head Set for NEJE Master Arduino with 450nm
I was intimidated at first by surface mount ICs - but then I realized you can pretty easily solder them to cheap breakout boards. Pictured is an Attiny84 I got from Aliexpress,
120m Classic Laser Measure Laser Range Finder Sensor Arduino With Class 2 Mute Accessory