I have a basic packing list that I keep in OmniFocus (a productivity app for Mac & iOS). I use it as a template: when I have a trip coming up, I just duplicate that list and add or subtract things specific to that trip. Then as I pack, I check things off in OmniFocus on my phone.
OmniFocus helpfully tells me how many items are remaining on the list, and I was a little startled just now to realize that my packing list template is 114 items long! That includes 7 things to do before a trip (arrange for cat care, wash dishes, etc), and my 9 subject headings each count as an item, but that still leaves 98 things that I expect to pack for most trips. That seems like a whole lot! And yet everything fits into an A45 or WF plus a personal item.
The items on my packing list are things like "Bras 2-3", "Coat, hat, mittens, scarf?", "Toothpaste", "iPad and/or Kindle", and "If going to Minnesota: key to sister's house". I list each toiletry item separately since I generally always need the same things no matter where I'm going, but I collapse clothing items into categories since what I need depends on the season and destination (so "Shirts" is a single item on the list).
The subject headings are a mixture of functional and descriptive, and I've been thinking about a more efficient way to sort things. The functional headings are based on what I'll be packing into (all the stuff on the wet toiletries list goes into a 3DCOC, all the stuff on the dry toiletries list goes into a mesh 3DOC).
Anyway, looking at my 98-item list got me curious about how others organize their packing lists. Do you have a basic packing list that you adapt for most trips? How long is it? What level of detail does it go to, and how do you organize it?