Plastic bottles give these everlasting squash their shape. Cut the bottom 2 or 3 inches from 2 plastic bottles, with one bottom about a half inch taller than the other. Discard the tops. Cut 4 one-inch slits into the taller section. Crumple orange tissue paper and place it inside both sections. Slide the shorter section over the taller. Cut a triangle from a brown paper bag and twist it into a gnarled stem. Glue it to the top.