Structures & Contraptions by  "15 Year olds" and "12 year olds"

KEVA Contraptions 50 Plank Set

KEVA Brain Builders Deluxe

KEVA Contraptions Reactions

STEM Machines Engineering Kit

Snap Circuits^®: My Home

LEGO Chain Reactions

KEVA Structures: 400 Plank Set with FREE Bonus Planks

Q-BA-MAZE 2.0: Super Race Set

Spin-Gineer Welding Rod Refill Pack

Q-BA-MAZE: Sparkle Builder Set

KEVA Design Woods

Gearjits Carnival Marble Coaster

Engino Deluxe Architecture Set

E-Blox® Circuit Blox 395, Circuit Board Building Blocks Classroom Set, 264 Pieces

Q-BA-MAZE 2.0 Grand Prix Racing Set

Geomag™ Mechanics Gravity Loops & Turns: 130 Pieces

Spin-Gineer

Design Your Own Gumball Machine Kit

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

Q-BA-MAZE 2.0 Lights Set of 2

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

KEVA: Contraptions 400 Plank Set with FREE Bonus Planks

KEVA Contraptions 200 and 400 Plank Sets with FREE Bonus Planks

STEM Newton's Laws Engineering Kit

Art-chitect with FREE Colored Pencils