Two of the four corners had signs on them.
I admit, the above is cool to me partly because it was my home in the dessert. The essence of ISH is that it is mostly improvisation.
In front of this sign was a pile of thin plywood men. The idea was that you could take one over to the painting area and put your woes into the thing. Then wire it onto the scaffold with all the others, and Lance would be glad to burn your stuff with all the rest in a big release at the end of the event.