Shipping in August 2026. Preorder today! KID-SAFE CARDBOARD CREATIONS Keep creativity flowing with the Cardboard Supply Pack (50 sheets). Designed for use with the Swift Saw and creative building system, Hatchling Robotics, and Hummingbird Robotics, these cardboard sheets provide students with a versatile building material for engineering challenges, design projects, inventions, and prototypes. Perfect for replenishing classroom supplies, this refill pack ensures learners always have the materials they need to imagine, build, test, and improve their ideas through hands-on STEM learning. Grades K-12 (Ages 5+) Contents: 50 Cardboard Sheets Ready to upgrade your collection? Explore the whole Swift collection here!