If your cat is nibbling on random non-food items off the floor, it might be a sign that your cat has been weaned off early. While it is a normal cat thing to do, it can be potentially dangerous if it ingests something sharp or toxic. Furthermore, nibbling on smaller non-food items like rubber bands or plastic is always associated with a possible choking risk, so it is important to keep an eye out for your cat if it is randomly eating things off the floor.