Build Box

CrunchLabs' Build Box is a monthly engineering toy from Mark Rober for ages 8–12+. Every part to build one working machine is in the box, batteries included, with an illustrated booklet and a video walkthrough. Past builds include a Disc Launcher, Coin Spinner, Drawing Machine, and Strobe Light, and it's STEM.org Authenticated.

Note: The price represents the monthly cost per Build Box and a subscription may require a multi-month commitment.

Each box features one mechanism (launcher, a spinner, a drawing machine) with the physics explained directly via Mark Rober with a supporting video. While this adds a screen component, Mark's videos are very engaging, kid-friendly and educational.