This one I call "The Gear Fence."
I constantly visit local Goodwill stores in an effort to find interesting materials for making terrain for WARMACHINE. I found a small box of K'Nex parts and decided that they could be used for something although at the time I had no idea what. They laid around for awhile and then one day I was reading my World War II magazine and I decided that I'd make them into something akin to hedgehog obstacles. Basically the idea is that the battlefields of the Iron Kingdoms are littered with parts, and these could easily be transformed into defensive fortifications.