We built the fire truck: Fire Blaster Buildex Machines
(buildexsystems.com). This is a wooden construction kit, and we were challenged trying to build it! We had to be gentle while pushing the pieces together. We would have never been able to build it without the directions. We wonder how somebody came up with this idea! After building it, you play with it because the truck actually rolls. Buildex also makes kits for cars, bikes, trains and more.