Since I travel a lot, I was thinking of having a packing list that I could create and every time I’m done with it I could click a button and they all become tasks again. For example, I create my packing list, next I check off all of the to-dos in the list. Once there are no more to do list I have the option to click a button which resets all of the todo’s. Makes them open again. This could also be used for groceries.