What's in my Travel Kit
Recently I picked up a Pelican 1510 Hard Case for when I need to travel with my equipment. Not only does this case provide ample protection as well as space, but it has built-in wheels and a travel handle for easy maneuverability. Another great feature of this case is that it qualifies as carry-on luggage when you fly. Even if no more carry-ons are allowed, you can be reassured that nothing is going to happen to the items that are stored inside.
To give you an idea of what I like to travel with, I generally bring:
Various filters and accessories
I find that this gear will let me tackle most projects unless something very specific comes up.