Checklists are great tools to ensure you don't leave home without the essentials.
The Outdoor Journal provides 4 checklists: hunting, fishing, hiking/backpacking, and camping. You can add up to 63 items to the camping checklist and up to 36 items in the remaining checklists.
Having the checklists in electronic form can be a real time saver. Once created, you never have to start a new checklist from scratch. Just "tweak" the entries already stored, if necessary, and print the checklist when you need it.