Return address labels keep you from writing your address on every envelope you send out in the mail. Sure, that's convenient, but there are so many other ways to use them! Stick them on expensive college dorm room items and cover with packing tape for extra durability. Take them with you whenever you might be filling out multiple applications or forms (job fairs, doctor offices, etc.) When the form asks for your information, stick the return address label on to cut down on repetitive writing time.