Buy your toothpaste in the half sized shampoo bottle. Small tubes are annoying and large ones can get pulled if you forget and commute in a polo one day.

Put everything in the same compartment every time.

When you unplug any thing charging, unplug from the wall not the device.

Leave a compartment open if it's items aren't in it. When you go to close you will remember why it was open to begin with.

Use the hotel hair conditioner as shaving cream.

Pack the same clothes every time. Suitcase, washer, dryer, suitcase. Buy two of everything you need so your suitcase has a dedicated toothbrush, razor, charger, etc..

Don't set your flashlight or sunglasses down in the plane, in your hand or in your bag. You will get up during an aircraft swap and leave them.

Pack a polo for your commute home so you can drink in first class.