Mike Bouchet of Cumulus Studios in Miami converted steel shopping carts into functional lounge chairs:
They are constructed from existing supermarket shopping carts. The metal is bent back and forward to create the shape of the seat and the child’s seat is reconfigured into an adjustable head rest. Sensible yet comfy cushions complete the lounge. Several versions will be presented including one chair fitted with a parasol and another tricked out with a night time reading light.
Just add some cushions and it'll look like a good patio chair.
Link via OhGizmo! | Bouchet's Website | Photo: Cumulus Studios