A separate checklist for each situation
Instead of making a list every time you do something (e.g. packing), you can use That Checklist App to create checklists that you will re-use later.
Stop wondering if you forgot something
With That Checklist App you can create a list template now that you can complete later. Instead of re-creating the list every time you can create the list once and re-use it. You can immediately feel relieved knowing that you won't forget important steps in the process later.