Thames & Kosmos SolarFlower: Ruby Ripple
A sun-powered kinetic flower that teaches motors and gears
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Klutz LEGO Chain Reactions
Build 10 LEGO machines and link them into chain reactions.
Best for kids who love Rube Goldberg machines and tinkering.
$21.99Klutz list price
This is Klutz’s own list price (checked October 28, 2026). Amazon’s price is often lower; tap above for today’s price. Paid link: Electroys may earn a commission at no extra cost to you. Listing verified October 28, 2026. See Klutz’s product page.
At a glance
- Age guidance
- Ages 8+
- Price
- $21.99 list price
- Screen needed
- No, fully screen-free
- Batteries
- Not needed
- Adult help
- Little to none
- Play style
- Solo or together
- What it is
- Instruction book, 33 LEGO elements, paper ramps and props
- Great for
- Stocking Stuffer, Holiday, Rainy Day, Birthday
A book-and-parts kit with instructions for 10 LEGO machines that spin, swing, roll, lift and drop. Kids connect them into Rube Goldberg-style chain reactions and troubleshoot until each step triggers the next.
Why we picked it
- 01Includes 33 LEGO elements plus paper ramps and props
- 02Debugging a chain reaction teaches real engineering iteration
- 03Works with LEGO bricks kids already own
What they’ll learn
Always follow the manufacturer’s age and safety guidance. Small parts may be a choking hazard for children under 3.
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