Quantity   Component name
11 × NPN Bipolar Junction Transistor
5 × PNP Bipolar Junction Transistor
1 × paper clip
2 × 2.2K ohm resistors
4 × AA alkaline batteries
1 × 800 ohm resistor
3 × 220 ohm resistors
1 × 330 ohm resistor
1 × 1000 micro-Farad electrolytic capacitor
1 × 47 micro-Farad electrolytic capacitor
1 × 4.7 micro-Farad electrolytic capacitor
1 × 3.3 micro-Farad electrolytic capacitor
6 × solid core wire
1 × 10K potentiometer
7 × 10K ohm resistors
2 × 3K ohm resistors
4 × 1K ohm resistors
1 × DC motor (with belt drive wheel)
2 × jar lids
2 × wooden lolly sticks
5 × thin wooden rods