- $22.97 Kinetic Rock with Hidden Treasure-"Moon Rocks" Refil-2 Pack-*New*-Free Shipping
- $4.50 Spin Master - The One and Only Kinetic Rock - Brand New in the Box
- $11.99 Spin Master Kinetic Rock with Hidden Treasure Gift - Real Rock! Sticks Together
- $18.99 The One & Only Grey Kinetic Rock- Magically Sticks With Hidden Treasures
- $7.97 Rube Goldberg Castle Escape Challenge Replacement Pole
- $7.79 Rube Goldberg Garden Challenge Replacement Cage Stand Piece
- $7.97 Rube Goldberg Acrobat Challenge Replacement Set of 2 Support Bars
- $7.97 Rube Goldberg Castle Escape Challenge Replacement Cannon Piece
- $8.29 Rube Goldberg Acrobat Challenge Replacement Flag Pole
- $8.29 Rube Goldberg Acrobat Challenge Replacement Set of 4 Poles
- $8.29 Rube Goldberg Castle Escape Challenge 2 Helping Hands Replacement Pieces
- $7.97 Rube Goldberg Castle Escape Challenge Replacement Plastic Chain Piece
- $7.97 Rube Goldberg Acrobat Challenge Replacement Set of 3 Pole Braces
- $7.97 Rube Goldberg Castle Escape Challenge Replacement Shield Piece
- $3.00 The One & Only! Kinetic Rock (Brand New)
- $24.99 Rube Goldberg The Castle Escape Challenge Wonderology New
- $10.00 NEW, The One & Only Grey Kinetic Rock- Magically Sticks With Hidden Treasures
- $15.00 Inventions For Kids Educational Learning STEM Physics Speeding Car Challenge
- $16.98 Inventions For Kids Educational Learning STEM Physics Speeding Car Challenge TC