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It's been discovered that hospital checklists save lives. NASA's space program uses many checklists for vehicles, spacesuits, and equipment. Camping checklists make enjoying the great outdoors safer and more fun, and taking a grocery checklist to the market makes you a more efficient shopper AND saves you money, because you are less likely to buy things you don't need (AND less likely to have to come back for stuff you forgot and a little more stuff you don't need).
Of course, the best checklists are the ones you make yourself—after studying other people's checklists and personalizing them for your exact situation!
You might want to make a checklist for getting ready for Trick-or-Treating tomorrow (if you celebrate Halloween). I need to buy some candy and candles for the jack-o-lanterns, and my kids might need some more glow sticks and special make-up...
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