Skip to content

Connectors Set / variety
Connectors Set / varietyConnectors Set / varietyConnectors Set / varietyConnectors Set / varietyConnectors Set / variety
$14.95
  • contains 30 assorted connectors

  • Fits most single ply cardboard

  • Works with 3Dux University lesson plans and independent projects

  • Typically ships within 48 hours

  • Safe checkout

  • ages 4+ / small pieces - choking hazard




The 3DuxDesign Cardboard Connector Jar includes an assorted collection of colorful, reusable connectors that make it easy to build with cardboard at home, in the classroom, or anywhere kids are ready to create.


As the original 3DuxDesign cardboard construction system, these connectors were designed by a pediatrician and a team of education experts with all learners and children in mind. The system helps kids turn everyday cardboard into open-ended models, structures, inventions, and design solutions while supporting creativity, confidence, and hands-on learning.


The connectors work with most single-ply cardboard, so young makers can reuse shipping boxes, packaging, and classroom cardboard to build castles, cities, vehicles, playgrounds, museums, animal habitats, game boards, engineering prototypes, and original creations.


Unlike many STEM kits or cardboard building kits that focus on following step-by-step models, 3DuxDesign connectors and web-based project resources are built for creativity, engineering innovation, and design thinking. Kids can build, take apart, redesign, and rebuild as they test ideas, solve problems, and bring their own imagination to life. The system is easy and intuitive for beginners, yet flexible enough to grow with students as their ideas become more complex.


The Connector Jar can be used for independent creative play or connected 3DuxDesign's lesson plan and resource library, with activities ranging from quick design challenges to deeper project-based learning experiences. Educators and families can use the connectors to support hands-on STEM learning, STEAM, architecture, engineering design, spatial reasoning, sustainability, creative reuse, collaboration, and problem solving.


Perfect for families, classrooms, homeschool, libraries, makerspaces, camps, enrichment programs, birthday parties, and creative play at home, this connector set is ideal for anyone looking for the best cardboard construction tool, reusable cardboard connectors, STEM building materials, recycled cardboard activities, or an easy alternative to tape and glue.


With 3DuxDesign connectors, cardboard becomes more than a box — it becomes a building material for imagination, innovation, and real-world design.







Back to top