Audubon Soda Bottle Bird Feeder - 1984, Norman Earl invented the Soda Bottle Bird Feeder, a sturdy cast zinc adaptor that converts any plastic two-liter bottle into an economical feeder. Only $15! at DWR
SNURK created Le Clochard - a cotton bedding set that looks like very real cardboard boxes. Their tagline is "Sleep under a cardboard box so a homeless young person doesn’t have to". Partial proceeds go to SZN, a foundation benefiting homeless Dutch youth.
I did similar explorations of city maps for my architecture thesis, but Lee Jang Sub has taken the idea one step further and turned his drawings into a set of products, titled the 'Complexcity Project'.