Forgot the diaper bag? Left it in the car? Don't feel like bringing it on a short jaunt? Forgot the diaper bag again? (so guilty of that one). For my second ill prepared mommy tip, I advise you to put a diaper in your regular purse. Heck, put one in all your purses. Then you will never be without one if your little one poops at the park, grocery store, mall, etc. You can always use wet paper towel in the bathroom to wipe, so don't clog up your purse with the unnecessary. One diaper will do in a pinch!