Learning Resources Boys Building Toys

Stem Explorers - Mathlink Builders

Gears! Gears! Gears! - Beginner Building Set- 96 Piece

Tumble Trax Magnetic Marble Run STEM Toy - 28 pcs.

Gears Gears Gears - Super Set- 150 Pieces

1-2-3 Build It Construction Crew

Engineering Design - Castle Building Set

Design Drill Sparklebot

1 cm Interlocking Unit Cubes - Set of 1000