OFFI Spaecframe Builders Kit
As a kid, I would have gone gaga over this OFFI Spaceframe Builder’s Kit, which is on sale right now (half off!) via Design Public. The building block system is made from recycled soda bottles to form rigid felt-ish building modules. They can be combined in any number of ways to create space ships, houses, dinosaurs and more. Perfect for your little budding architect, or maybe also for the corner of your home office. $99 at Design Public.