When people talk about packing it's usually for long escapades or weekend trips. However, people sometimes forget to "pack" things for daily outings. Whether you're going to the dog park, on a hike, to a friends house to finish up some work, or simply running errands; you may need to take some things with you.
Obviously this is nothing groundbreaking, but having simple routines can help you on your little adventures. Personally, I go by the traditional "phone, wallet, keys" where I pat each of those things or hold them in my hands. It's simple, but it's amazing how busy peoples lives are to where they forget the little items they need to go about their day.
Who knows, maybe your check is "keys, cards, mini deodorant". You're a busy person.
-CS