Customers say these build boxes spark genuine excitement and engagement, with kids eagerly anticipating each monthly delivery. The kits feature clear instructions and quality materials that children can assemble independently or with family, learning engineering principles through hands-on building. Accompanying videos make concepts accessible and fun. Kids continue playing with completed projects for weeks, often creating new inventions by combining boxes. Many families appreciate the bonding time and screen-free play. Most praise the responsive customer service and willingness to replace missing parts. A few note the boxes are simpler than expected for older kids, and some mention international shipping costs are steep.