Leaving on a jet plane

I dislike packing. And yet I seem to do it so often. You would think I would have a routine by now. But no, it’s the same thing every time; Go through your worldly possessions and foresee which ones you will need for the coming trip. What are the things that are most important, but not too important because you might lose them.
After printing out the documentation about the Goofy run I am beginning to look more forward to it. The actual Disney parks themselves I can leave.