I have several large blocks of styrofoam, for carving or a dock, or ???
Originally there were 6 that were each 4’ x 4’ x 16’. One of those was cut in half and has some sections carved out of it. A couple have been cut in half, so they’re currently in 4’ x 4’ x 8’ chunks, and the rest are still 16’ long if I recall correctly. They’ve been stored outside under a tarp. A couple have painted sides.
The pic is from when I moved them a few years ago. That is half of them.