Hypertufa Pot: They used styrofoam sheets to make the form, covered in chicken wire, and covered with a mixture of equal parts cement, sand, and peat moss until the mixture takes on a gloppy, doughy consistency. This one has an open bottom to plant a tree in. What a cool idea!
Fake Boulder made from wire and covered with hypertufa. Make smaller rocks from hypertufa by just plopping a half shovel full into plastic shopping bags, twist them closed and lay them on the ground on top of the twist to keep them closed. Two days later, unwrap them, and out they go to your garden bed edge.