Structures & Contraptions by  "13 year olds"

KEVA Brain Builders Deluxe

KEVA Contraptions Reactions

KEVA Contraptions 50 Plank Set

STEM Newton's Laws Engineering Kit

Spin-Gineer Welding Rod Refill Pack

STEM Machines Engineering Kit

LEGO Chain Reactions

STEM Machines Engineering Kits: Set of 2

Q-BA-MAZE: Sparkle Builder Set

Gearjits Carnival Marble Coaster

Spin-Gineer

Q-BA-MAZE 2.0: Rocket Set with FREE Light-up Cubes

Q-BA-MAZE 2.0: Super Race Set

Engino Deluxe Architecture Set

KEVA Design Woods

Q-Ba-Maze Mega Lights Set

Q-BA-MAZE 2.0 Grand Prix Racing Set

Snap Circuits^®: My Home

Spin-Gineer Construction Kit & Refill Rods: Set of 2

KEVA Structures: 400 Plank Set with FREE Bonus Planks

KEVA: Contraptions 400 Plank Set with FREE Bonus Planks

KEVA Contraptions 200 and 400 Plank Sets with FREE Bonus Planks

Hardwood KEVA® Brain Builders Classroom Edition

Art-chitect with FREE Colored Pencils