Amazon.com: LEGO Classic 10717 Bricks 1500 Piece Set - Encourages Creativity in all Ages - Ideal for Creators of all Ages - Brick Separator Included : Toys & Games
LEGO Derby Car Zinc Weight
LEGO PART 73090b Brick Special 2 x 6 x 2 Weight with Sealed Bottom and Dimples on Ends | Rebrickable - Build with LEGO
LEGO Brick, Modified 2 x 6 x 2 Weight - Bottom Sealed, Dimple on Ends Ballast | eBay