Paul hit it on the head perfectly. Much of it depends if you sleep in your system or not. Here would be my list:

- your adhesive just in case
- satin/silk pillow case if you sleep in your system
- small bottle of color safe shampoo since hotel shampoo sucks

The rest is just the normal stuff anyone would bring. Hair gel/spray, brush, etc. I've only been wearing 3+ months now but have traveled multiple times and its just as easy as before. No added worries in security or anything. Very easy overall. Safe travels!