10 Best Gear Kits for Engineering Activities Kids Love

1. Playz Electrical Circuit Board Engineering Kit for Kids with 25+ STEM Projects Teaching Electricity, Voltage, Currents, Resistance, & Magnetic Science | Gift for Children Age 8, 9, 10, 11, 12, 13+

Build your own electrical circuits with this fun and easy kit. Try over 25 cool experiments like making lights flash and sounds play. Learn how electricity, voltage, and magnetism work in real life.

Kids can connect wires and test touch, light, and sound controls. The kit includes a flying ball, a working AM/FM radio, and more. Every project helps kids think like real engineers and scientists.

It comes with a 64-page guide full of pictures and instructions. Great for learning STEM at home or in school.

2. Klutz Lego Gear Bots Science/STEM Activity Kit for 8-12 years

Build moving machines with LEGO! This kit lets kids create 8 cool bots using LEGO Technic and papercraft.

It comes with all the LEGO parts you need. The 64-page book teaches about axles, cams, and cranks. Kids learn real engineering in a fun way. Step-by-step instructions make it easy to follow.

3. STEM Kits for Kids Age 8-10, Science Robot Building Kits for Boys Crafts 8-12 5-7, STEM Toys for 6 7 8 10 12 13 Year Old Boys Girl Gifts, Science Experiments for Kids 6-8, Car Engineering Projects

This fun STEM kit includes 5 different robot cars. Kids can build a solar car, wind car, tank, obstacle robot, and a wire-controlled car.

Each robot is easy to build with step-by-step instructions. Kids can learn science while playing. These STEM toys help improve focus and thinking.

Great for family time and learning together. Kids will enjoy hours of hands-on fun. This is a perfect screen-free activity that keeps kids busy and creative.

4. 100+PCS Technic Gears & Axles Compatible with Lego Technic Sets – Gears, Rack, Pins, Axles, Differential for Car Building Brick Accessories – Random Color

Build smarter, faster, and with more fun. This 118-piece Technic gear set gives you everything you need. No more hunting for parts—just open and start creating.

Each piece is compatible with LEGO Technic. The fit is tight and smooth, never loose or frustrating.

Design robots, cars, or cranes with ease. Mix and match gears, axles, and pins to build your own ideas. It’s a great pick for any STEM-loving builder.

5. Poraxy STEM Kits for Kids Ages 8-10-12, 5 Set Wooden 3D Puzzles, Educational Science Experiment Building Projects Crafts, Toys for Ages 8-13, Birthday Gifts for Boys Girls 8 9 10 11 12 13 Years Old

Build, learn, and play with the Poraxy STEM Kits for kids ages 8–13. Each kit includes 5 fun wooden puzzles that kids can build by themselves. The parts are safe, smooth, and easy to fit together.

Kids can decorate their models and proudly display them. These kits help boost creativity and problem-solving skills while having fun.

6. Science Kits for Kids – STEM Kits for Kids, Electronics Exploration Kit, Over 420 Projects, 35 Circuit Parts, STEM Educational Toy Gifts for Kids Boys Girls Ages 3 4 5 6 7 8 9 10 11 12

Build over 420 exciting projects with this fun STEM kit. Kids explore electronics using 35 easy-to-use circuit parts. No tools or soldering needed—just snap and play.

Learn about parallel and series connections with colorful cards and a 37-page manual. Every step is simple and safe.

Great for curious minds and future inventors. Boosts confidence, sparks creativity, and keeps kids engaged for hours. Perfect for boys and girls ages 5 to 12.

7. Snap Circuits Classic SC-300 Electronics Exploration Kit | Over 300 Projects | Full Color Manual Parts | STEM Educational Toy for Kids 8+ 2.3 x 13.6 x 19.3 inches

Build cool gadgets in minutes. Learn how electronics work. Have fun while you explore.

This kit has over 300 projects. You can make things like radios, alarms, and games.

No tools needed. Just snap the pieces together. Everything is safe, easy, and educational.

8. Learning Resources Gears! Gears! Gears! Mega Builds – Building Toys, STEM Activities, Fine Motor Skills, Toddler Explorer Kit, Kindergarten Science and Construction, Boys and Girls Gifts

Build big, dream bigger! This 235-piece STEM kit lets kids create wild, whirling machines with colorful gears and parts.

Kids can design, build, and explore. Every piece fits together easily. The guide helps kids follow fun ideas or invent their own. It’s perfect for growing fine motor skills and problem-solving.

Trusted by teachers since 1984, Learning Resources makes smart play simple. Give kids the tools to think, create, and learn every day.

9. STEM Science Kits for Kids 5-7 8-12, Robotics Robot Building Car Kit STEM Toys for Boys Robots Craft 5-8 6-8, Science Activities Experiment Engineering Project Electronics 5 6 7 8 Year Old Boy Gifts

Build and play with 5 awesome robots and cars! This fun kit helps kids learn science and engineering while having a great time.

Each kit makes a cool robot or car. It’s easy to build with safe parts. Kids follow simple steps with a mini screwdriver.

10. Thames & Kosmos Kids First: Intro to Gears STEM Experiment Kit for Ages 3+ | Build 4 Models, Learn About Gears, Power & Motion | Intro to Mechanical Engineering for Young Learners | Durable Parts

Make learning fun with the Thames & Kosmos Kids First Intro to Gears STEM Kit. Build 4 amazing models and explore how gears, power, and motion work. It’s perfect for kids aged 3 and up.

This kit includes durable, colorful pieces that are easy for small hands to use. The illustrated manual has clear instructions to help kids build and experiment confidently.

Young learners will develop fine motor skills and improve their reasoning abilities. It’s a great way to introduce mechanical engineering in a simple, hands-on way.