 Safe-class SCP objects are the easiest ones to contain in the SCP Foundation. Does that make them not dangerous? Of course not. Some safe-class SCP objects can be extremely fatal under the right circumstances. A great example of a safe-class SCP object are basically anomalous books. Usually the anomalous trigger of the book usually involves you having to read the passages within the book. So usually you could just put it in a locker, keep it away from people, and it won't hurt you. Some great examples would be SCP-1025, Encyclopedia of Common Diseases, or SCP-1230, a hero with both involved reading the passages of the book.