For the semester-long ‘red paperclip’ project, I started with a small black binder clip.  I traded this for a hand-written sign, which I quickly traded for two pieces of mint gum.  I held onto the gum until presented with a trade for 10 ft. of multicolored duct tape.  I crafted this tape into a duct tape wallet.  I traded the duct tape wallet for a leather wallet and a name tag, which is where I now stand with my trades.