Hi all, I am picking up a bunch of insulated Styrofoam boxes. They are about 24" square with 2" thick walls. I can get a lot of them, if needed. Can anyone help me with ideas for them? The only thing that comes to mind are huge planters covered with mortar or stucco, tufa forms, or maybe even stacking them up for columns. I'd love to hear suggestions about finishing the outside of them, anything to get the ideas started. Thanks!!