I wouldn't take it on an airplane..not bacause of packaging, but because of handling..don't think for an instant they take even the slightest care of your stuff. You're better off fed-exing it to yourself wherever you go if you absolutely must take it.
As far as what to take it in, I'd normally just carry the console and put the controllers, wires and games in by old bookbag. If I'm going to stay somewhere for a while, like driving to my friends vacation house, I just pack it in my bag with the rest of my clothes and such. Just make sure it's tightly secured, and I use one with the inside strap, after packing it in, to make sure it won't move. Word of advice if you do this though - make sure you pad underneath it as well.
I'm sure they have actual carrying cases for it though..and while I haven't looked, I'm sure it costs far too much to convince me to do it another way, as I've done it this way many times and never had a problem.







