Quantity   Component name
3 × 555 timer or one 555 and one 556
1 × CD4017BE decade counter
12 × 500k ohm potentiometer
11 × red LED one for each output and one for the status
14 × 1k ohm resistor
1 × 220 ohm resistor probably optional
10 × 1N4148 diode
12 × Two-position switches or 10 switches and one with two different connections
1 × 0.01uF non-polarized capacitor
1 × 0.1uF non-polarized capacitor
1 × 0.1uF polarized capacitor a 0.01uF non-polarized should work too
1 × 10uF polarized capacitor
1 × Speaker
2 × 9v battery
1 × Box