Rigamajig Basic Builder Kit for Hands-on Play & STEM Learning. Encourage Collaboration with 260 Loose Parts, Including Wooden Planks, Nuts, Bolts, Pulleys, Rope. Great for classrooms! Kids Ages 3+

We play with these every time we visit the Wonderfeet Kids' Museum in Rutland, Vermont. They are SO MUCH FUN! They connect easily enough that my 4yo can attach the boards and maneuver the nuts and bolts on her own, and they're extremely sturdy and durable. They've been at Wonderfeet for over a year now. They get a LOT of use and still look and work great. We've (and by we, I mean me, along with my 7 & 4yos, because they're as much fun for adults as for kids) created forts, a pirate ship, a car that really rolled, a crane, and so much more. The kids (and I) never tire of figuring out what new thing we can create. Rest assured though, the kids do NOT need me to help them create with these. My only complaint: that the price point is not something we can afford for our home, so for now, we'll have to keep visiting Wonderfeet to create with Rigamajigs.