A simple first project using the MakeDo cardboard connectors. Seem fun for quick prototyping, although some issues: they’re a little trickier than they should be to screw into most cardboard, and how many kids really want to take apart their creations to recover the (fairly expensive) plastic screws?
Feel like there could be an even simpler solution. Maybe something like these folding paper “staplers” that could punch and fold cardboard in one step?