Quantity   Component name
1 × Enclosure, at least 2.25 x 2.5 x 1.25 internal space any shape, with flat portions to mount controls
1 × perf board, 1" x 2" one per module
1 × 1x8 stackable header
2 × 1x1 male header
1 × 1x2 female "pc settings" jumper like you used to have to use to set motherboard and hard drive settings back in the 90's
1 × bag of assorted through-hole resistors
1 × bag of npn transistors
1 × bag of op-amps
1 × bag of various potentiometers
1 × bag of assorted diodes
2 × 1/4" female audio jacks