Now In Stock ✦ STEM Kits
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No glue. No screens. No batteries. Just a kid and a box of parts.
Smartivity · STEM Building Kits · Full Lineup
Eleven Machines You Build Yourself
The two kits we teased in August landed — and they brought nine friends. Launchers, arcade games and working models, $14.99 to $29.99, on the shelf now.
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Smartivity STEM Toys STEM & Plushies Board Games & Toys
Smartivity Robotic Mechanical Hand—the showpiece build, ages 8+.
Back in August we told you about two Smartivity kits—a hydraulic plane launcher and a robotic hand—and asked you to wait. The wait is over, and the box was bigger than we expected.
Eleven Smartivity kits are on the shelf now. Everyone has the same idea: pre-cut engineered wood that slots together without glue or tools, a mechanism that actually works when you’re done (hydraulics, gears, air pressure, linkages), and an instruction book written for the kid, not the parent. Ages 6 and up on the launchers and arcade games, and 8 and up on the working models. $14.99 to $29.99.
The whole range is in Smartivity, alongside the rest of our STEM toys.
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Launch offer · every Smartivity kit
Take 10% off with code SAGA10
Enter it at checkout — works on every in-stock kit below, online or at the counter.
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Get new builds & restock alerts.
We bring these in a few at a time, and the popular ones go fast. Tick “STEM & Educational Toys” below, and we’ll tell you when a kit restocks and when new Smartivity builds land.
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Launchers
Things that fly across the room
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In Stock · Ages 6+
Hydraulic Plane Launcher
Build the launch pad, fold a plane from the 10 included sheets, press the plunger, and let water pressure do the throwing. The one that started it all at Saga.
They learn hydraulics and aerodynamics. · scissor mechanism
$16.99
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In Stock · Ages 6–12
Rocket Launcher
Build the rocket, load it on the launcher, and hit the button. Three foam boosters in the box, so the first one lost behind the couch isn’t the end of the afternoon.
They learn: propulsion and action–reaction forces.
$16.99
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In Stock · Ages 6+
Missile Truck
A six-wheeled truck with a 360° rotating launcher and an air pump mounted on the back. Five soft missiles, fired one at a time, at whatever target the room offers.
They learn: Air pressure · rack & pinion · rotational force
$21.99
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Arcade
Games you build, then beat your dad at
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In Stock · Ages 6–12
Mini Golf
A 10-hole tabletop course with a mechanical club, ramps, obstacles, and “tree poppers” that fly when you hit them. Comes with a tiny champion’s trophy.
They learn: Fine motor skills · spatial awareness
$14.99
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In Stock · Ages 6–12
Mini Pinball
Handheld pinball you build yourself: snappy launcher, two flippers, quick reset. Fits in a backpack, which is either a feature or a warning.
They learn: Levers · gravity · elasticity
$14.99
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In Stock · Ages 8+
Pinball Machine
The full-size one: 375 parts, 23 colored balls, two lenses to adjust the view. A real weekend build that ends with an arcade machine on the kitchen table.
They learn: Levers · momentum · kinetic energy
$24.99
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Back Soon · Ages 6+
Foosball Table
Tabletop foosball, built from five wooden sheets, then played against whoever’s nearest. The one multiplayer kit in the range.
They learn: Momentum · action–reaction · reflexes
$24.99
Restocking — get the alert above
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Machines
Working models for the older builders
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In Stock · Ages 8+
Hydraulic Crane
Six syringes, 88 parts, and a crane that swings on two axes and actually lifts things. The construction-site fantasy, minus the hard hat.
They learn: Hydraulics · rack & pinion · how cranes work
$22.99
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In Stock · Ages 8+
Robotic Mechanical Hand
The showpiece. A wearable hand whose fingers flex and grip when yours do — 191 parts, 22 stickers, and a permanent spot on the shelf afterward.
They learn: Biomimicry · hand anatomy · linkages
$22.99
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In Stock · Ages 8+
Music Machine
A programmable xylophone box. Set the pegs, turn the crank, play the tune — five music sheets included to get started.
They learn: Vibration · gears · ratchet & pawl
$29.99
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In Stock · Ages 8+
Solar System
Turn the crank and eight planets orbit the Sun on a gear train. Nine planet fact cards and a spinner game come in the box.
They learn: Planetary motion · gear ratios · astronomy
$22.99
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Which one for which kid?
First build, ages 6–7: Plane Launcher or Mini Golf. Fewer parts, a payoff in under an hour, and something to play with the same day.
The kid who takes things apart: Hydraulic Crane or Robotic Hand. The mechanism is the point, and both keep working long after assembly.
A rainy weekend: the full Pinball Machine. 375 parts is a project, not an afternoon — and a good one to build together.
Already have the plane launcher from the first drop? The Rocket Launcher and Missile Truck are the natural next two. Everything’s in Smartivity.
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Build something this weekend
Come see the finished builds at the counter, pick a kit, and bring the next generation of nerds along. We want to see what they make.
Code SAGA10 takes 10% off any Smartivity kit at checkout.
Shop Smartivity All STEM Toys
STEM alerts — tick “STEM & Educational Toys”
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Smartivity® and product imagery © Smartivity Labs, via official product materials, used for product preview purposes.
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