Write a Packing List You Will Not Forget at 11pm

You always forget something. Not a disaster thing, just the one annoying thing you end up buying at the airport for three times the price. This builds a complete, categorised packing list for your specific trip so you can tick it off the night before and actually find your passport in the morning.

I am travelling to {DESTINATION} for [number of days]. The trip involves [brief activity notes: e.g. beach, hiking, formal dinner, cold weather]. Build me a complete packing list organised into: essentials (documents, money, phone), clothing (broken down by activity), toiletries and medication, and electronics. Flag anything I will regret leaving out and anything most people over-pack. Keep it scannable.