This 10-Year-Old Built an Off-the-Grid Tiny House for $10

(Image credit: via Relax Shacks) Are you feeling productive today? Well, this 5th grader is here to show you up. Ten year old Callie Hilton built an off the grid, solar powered tiny house as shelter for the homeless for a school project. And if that wasn't impressive enough, the materials only cost 10 bucks.