My wife and I do the same, though with Google Keep. There is also a Google sheet for packing to go on trips. Each column is a trip, with rows labeled with item

My wife and I do the same, though with Google Keep. There is also a Google sheet for packing to go on trips. Each column is a trip, with rows labeled with items, and the intersecting cells filled with NA or an X when packed. Some family members make fun of it, but we rarely forget to bring things.