K'Nex 85049 Motorized Creations Building Set - 325 Piece STEM Learning Kit for Kids Ages 7+ | 3D Educational Construction Toy with 25 Colorful Models | Engineering Toys for Children | Perfect for Classroom STEM Activities & Creative Play at Home

**K'NEX 80209 Mega Models Building Set – 700-Piece STEM Learning Kit for Kids Ages 7+ | 3D Educational Construction Toys, Engineering Building Blocks for Creative Play | Perfect for Classroom, Homeschool & Family Fun**

K'NEX 80208 Wings and Wheels Building Set - 500 Piece STEM Learning Kit for Kids Ages 7+ | 3D Educational Construction Toy with 30 Colorful Models | Perfect for Classroom, Homeschool & Engineering Play