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  V1: Boards





  V2: Clamps
      Candle shade
      Index Cards
      String
      Thread
      Plastic Cups  
      Petrie Dishes

   V3: Blocks
      Plastic stir straws
      Stuffy
      Bowl
      Playing cards
      Balloons
      Pulleys

 

  V4: Rocket cart  
      CO₂ Fire Extinguisher