Quantity   Component name
6 × Omron G5V-1 or similar relay
9 × 100nF ceramic capacitor
36 × 1M resistor
6 × 1K6 resistor Electronic Components / Misc. Electronic Components
6 × 150K resistor
6 × 4.7 uF electrolytic capacitor
12 × pin headers
12 × pin socket
6 × tiny neodymium magnets cylindrical 4mm diameter, 1mm thick or similar size
2 × Dip switches, 6 on one part
1 × PCBs ordered from the internet, or DIY, or just a raster and a lot of patirnce
1 × pickup moumt 3d-printed, or just cut out of some sheet material
1 × a guitar with steel strings the project says "pickup", but I'm including a guitar, because it's kinda necessary in the end :D