Practically unchanged since the end of the 19th century, the paper clip is immune to innovation.

Getty Images/BananaStock via Thinkstock. The paper clip is something of a fetish object in design circles. Its spare, machined aesthetic and its inexpensive ubiquity landed it a spot in MoMAs 2004 show Humble Masterpieces. This was a pedestal too high for d… #BestStandardHangers