My solution was to create a packing list. My initial list was done in the Notes app. The bonus: it’s free and syncs across devices.
Then I discovered the app Packing Pro. While it doesn’t automatically sync like Notes, there is a fairly easy way to import data across devices. I really like that it has alerts, categories, filters, sample and preset lists, etc. The great news is that this app is very affordable; $2.99.