A monthly STEM subscription box

Build something real.
Every single month.

Designed for curious kids ages 6-9. Real projects. Real engineering. Delivered to your door.

Ages 6-9
$59 start · $45/mo
No experience needed
Cancel anytime
Email to Subscribe Learn More
How It Works

Simple for kids. Impressive to parents.

Every kit follows the same rhythm — open, build, discover — so kids know what to expect and dive straight into engineering.

1

Open your box

Each month a new kit arrives with everything your child needs — parts, lesson card, and a guided challenge — ready to go straight out of the box.

2

Follow the build

Step-by-step illustrated cards walk kids through the project at their own pace. Parents can join in or step back — both work great.

3

Make it move

Every project comes to life with a servo motor. Kids see their creation actually do something — and learn why it works in the process.

Monthly Kits

A new challenge every month

Each kit is a standalone project, so new subscribers can jump in at any time. Here's a peek at the lineup.

[ Kit action photo —
camper raising the drawbridge ]

Month 1

The Drawbridge

Build a working drawbridge that raises and lowers with the press of a button. Learn how servo motors convert electrical signals into physical movement.

Force & motion

[ Kit action photo —
new build coming soon ]

Month 2

Coming Soon

Month 2 details will be announced soon. Each new kit builds confidence and introduces a new engineering concept — no prior experience needed.

New challenge monthly

[ Kit action photo —
dragon jaw chomping ]

Month 3

The Fire-Breathing Dragon

Bring a dragon to life with a servo-powered jaw mechanism. Kids design and build a creature that actually moves — creativity meets engineering.

Mechanisms & linkages
Pricing

Simple pricing. Everything included.

$59 first project
then $45 / month
One-time $59 starter covers your first month & project; $45 for every project after · + shipping & handling · cancel anytime
  • A brand-new servo project kit delivered monthly
  • All parts and components included — nothing to buy separately
  • Illustrated step-by-step lesson card designed for ages 6-9
  • Real servo motor hardware — not a toy kit
  • Curriculum developed by Wagner Labs STEM educators
  • No long-term commitment required
Email to Subscribe

Gifting to a child? We'll add a gift card to the first shipment — just leave a note at checkout.

Was your camper at SmartServo STEM Camp?

The monthly kits pick up right where camp left off — same servo, same style of guided builds, new challenge every month.

See the Camp Connection
What's Next

SparkServo is just the beginning

Once your child has built confidence with servo technology, they're ready to step up — naturally — to the full SmartServo Project (ages 10+). Spark graduates arrive ready.

Explore SmartServo Makers Build with SparkBuild