Besides what's in my kits, I carry a "Pocket Duct Tape" (found here) in my pocket at all times. Very handy and easy to carry in pockets and small kits. One could make their own but the commercial, compact packaging seems pretty durable and prevents the edges of the tape from collecting pocket lint and causing other sticky messes in my pocket. These make nice, inexpensive gifts to those who are uninitiated on preparedness because they open the door to further dialog on the topic.