Quantity   Component name
1 × Crazy Circuits Touch Board Found at CrazyCircuits.com.
8 × Crazy Circuits 12mm Buttons We used 2x2 and 2x4 sized.
2 × Nylon Conductive Tape At least two rolls, 10 Meters or 30 Feet worth.
1 × Around $130 worth of LEGOs. For the big version.
1 × 8x16 LEGO Base Plate For the smaller version.