I am a n00b and I don't even travel hardly ever, however, I like to over-prepare so one thing I'm planning to do is to have a change of clothes in my carry-on.

That way I at least have one set of clean clothes if my luggage happens to end up in Bangladesh and I'm in New Orleans.

We also have a set of vacuum bags made of compressing down clothing for travel from when my step-daughter took a trip to Europe. I figure these will come in really handy, especially on the return trip to compress dirty clothes and make more room for convention swag and odds 'n ends purchases that I'm bringing back.