Every few years I try to make something large and totally impractical.  I have been fascinated by the Giant Squid for quite some time.  A real life, terrifying mystery of the deep.  The video clip above helps give a sense of scale.
I recently posted a step-by-step essay of this piece with lots of process photos over at Instructables.com
Materials:
Street light covers, belt wheels, railing sections, brass fireplace hardware, candle sticks, drawer pulls, chandelier parts, wood planks, vanity mirror frame, timing motor, gear motor, LED lights, lawn sprinkler, pop rivets.  
Giant Squid 2006 (6’7” x 10’8” x 3’6”)
video clip