Quantity   Component name
1 × Arduino Uno Arduino µController
1 × 5V/1A power supply with barrel connector
1 × Casio SA-21 keyboard or similar
8 × Micro servo motors Such as SG90 9g
1 × Power switch
1 × Power indicator LED
1 × 220 Ohms resistor
3 × 3mm plywood sheets 300x450mm (or anything that fits your laser cutter)
1 × USB cable Electronic Components / Misc. Electronic Components
1 × small breadboard or prototyping board
1 × some wires