Goats are incredibly curious. They're so curious that you cannot get a new toy into their pen without them pushing and pawing at it before you get it through the gate.
Pretty much anything is a toy to a goat. Shoelaces, shirt sleeves, tree branches, boxes, and empty milk jugs are all fabulous toys. Today, I added a wood plank and a large plastic pipe to the goat pen. Before I could place the plank between the upside planter and the shipping crate they were already walking/jumping/chewing on it. When I rolled the pipe in they were crawling all over it and falling over each other.