Most hair conditioner works well as a moisturizer for hands and body. Plan to buy things once you are there. Shampoo, wool sweaters, saline solution, travel journals, even a guitar have all been procured by Cornellians once they have arrived. No customs agent is going to let you in with drugs that don't clearly belong to you. Oh, yes, and a handkerchief.
Many experienced travelers feel that a tiny flashlight is an essential.
When I once spent three hours with forty passengers in a pitch-black stopped train, we were all grateful for my flashlight, especially in the loo. As I gather clothes, I put them in a large, clear plastic bag so that I can see better what's about to go in my suitcase. I try to finish at least two days in advance. That way I cut down on forgotten stuff. You are also a little braver in those last two days about tossing the unnecessary out of your luggage.