Since airlines now charge extra to take luggage on flights, everyone's looking for a way to get rid of the suitcase. How about wearing this ugly, bulky vest/dress with enough pockets to stash all your stuff? The folks at the security checkpoint will hate you, but the airlines can't charge you for a checked bag! Link
There is a maker of clothing like vests, t-shirts, dress-shirts, trousers, well all kinds of clothes that have many, many, hidden pockets that are designed so the heavier stuff doesn't alter the exterior profile, or make you feel weird and unbalanced while wearing it.
It's great for airports of course 'cause of the baggage thing, but they're also cool because the stuff looks like any other bit of clothing, and is very cool when taking walks, or hiking, short or long distances.
The name is Scottvest - they originally made many-pocketed vests. I don't usually gush, but their products are worthy.
http://www.scottevest.com/