Not totally sure what to do with that hoard of trash piling up in the alley behind your apartment? If you're feeling creative (and maybe a little twisted?) like Tim Noble & Sue Webster you can spend the afternoon arranging this rubbish into abstract forms, then shining light onto your heap to display a figurative shadow. Take a look at their entire collection here. Check out "Turning the Seventh Corner", which looks to have you walking through a series of dark tunnels until you stumble upon one of their shadow pieces.