Supplementary Set

What there is most of

• Technic Brick 1 x 2 [1 Pin Hole] · Yellow×4
• Technic Axle 4 · Black×2
• Technic Brick 1 x 4 [3 Pin Holes] · Yellow×2
• Technic Gear 8 Tooth · Light Gray×2
• Technic Plate 2 x 4 [3 Holes] · Yellow×2
• Technic Plate 2 x 8 [7 Holes] · Yellow×2
• Motor, 12V Type 1 for 2-Prong Connectors with Middle Pin · Black×1
• Rubber Band Large [Square Cross Section] · Black×1
• Rubber Band Medium (Square Cross Section) Thin Cut · Black×1
• Technic Bush · Light Gray×1
• Technic Gear 24 Tooth [Old Style - Three axle holes] · Light Gray×1
• Technic Gear 24 Tooth Crown with Flat Teeth · Light Gray×1
• Technic Steering Pulley Large · Light Gray×1
• Wire with 1-Prong Connectors, 12V / 4.5V 28L · Light Gray×1

The twenty most numerous parts, longest bar first. Start a checklist to see all 14 part types and tick them off as you find them.