These cavemen costumes are super easy to make and they’re really cute. You’ll need faux fur fabric, which you can pick up at most craft stores or you can check your local thrift store. You basically just craft the costumes from the faux fur and then add sweats, leggings or other clothing underneath to keep you warm – just in case it’s cold on Halloween. Let the kids get dirty before you dress them. It will just add to the caveman authenticity!