Find a Spark your kids can build on Monday.

Blendies Explore symmetry, balance, and optical color mixing with rebuildable spinning tops. From $8.95 Pre-K-5th Grade 30-45 min Optical Illusions Color Peek inside → Wind-Up Vehicles Design and build vehicles that zoom using a spring-driven motor and stored energy. From $8.95 2nd-5th Grade 30-45 min Energy Wheels & Axles +1 more Peek inside → Monster Claws Build an air-powered claw that opens, closes, picks up, and lets go. From $8.95 4th-5th Grade 20-45 min Pneumatics Levers +2 more Peek inside → Flying Machines Build reusable high-flying copters and explore energy transfer, aerodynamics, and flight. From $8.95 K-5th Grade 20-45 min Energy Forces +2 more Peek inside → Drawbots Build whimsical machines that move, scribble, and draw through vibration and iteration. From $8.95 3rd-5th Grade 30-45 min Circuits Mechanical Vibration +1 more Peek inside → Crankie Contraptions Tell a scrolling illustrated story using a cardboard screen machine. From $8.95 1st-5th Grade 45-90 min Storytelling Peek inside → Monster Mouths Create playful air-powered creatures that move with pistons, cylinders, and air pressure. From $8.95 Pre-K-3rd Grade 20-45 min Pneumatics Storytelling Peek inside → Art Machines Build kinetic creatures from levers and fulcra that come to life when their parts move together. From $8.95 Pre-K-3rd Grade 20-45 min Compound Machines Levers +2 more Peek inside → Screen Machines Plan and bring illustrated stories to life by building a cardboard scrolling machine. From $8.95 K-5th Grade 45-90 min Storytelling Peek inside → Eyelusions Build a motorized thaumatrope, design image pairs, and discover how motion can fool the eye. From $8.95 K-5th Grade 30-45 min Optical Illusions Color +1 more Peek inside → Scene Machines Create hand-powered automata that use rotational motion to animate a scene. From $8.95 3rd-5th Grade 45-90 min Cams & Followers Storytelling +1 more Peek inside → Mazes Build ramps and pathways that guide a ball to its goal, then connect mazes together. From $8.95 Pre-K-5th Grade 30-45 min Gravity Iteration Peek inside → Hypnotizers Draw colorful spirals with a spring-driven machine that creates different designs every time. From $8.95 2nd-5th Grade 30-45 min Energy Optical Illusions +1 more Peek inside → Strawbots Explore balanced and unbalanced forces in a motorized wiggling machine. From $8.95 2nd-5th Grade 30-45 min Circuits Mechanical Vibration +1 more Peek inside → Straw Structures Engineer rebuildable structures with paper tubes, flexible connectors, geometry, and open-ended design. From $8.95 Pre-K-5th Grade 30-90 min Geometry Peek inside → Linkages Invent moving cardboard contraptions using systems of levers, fulcra, and linkages. From $8.95 Pre-K-5th Grade 30-45 min Levers Pivots +1 more Peek inside → Electric Vehicles Design, build, and test battery-powered vehicles using motors and simple circuits. From $8.95 3rd-5th Grade 30-90 min Circuits Wheels & Axles +1 more Peek inside →