This is made of wood - very solid, solid enough to sit safely on. For a while, I used it like a coffee table. But you could take it to bits and make something else out of the wood.
It started life as a piece of furniture for standing a television (etc) on. It had castors, but they fell to bits a long time ago. Years before I acquired it, someone must have removed shelves in it (see the row of holes on the end pieces).