<p>Coming back from Korea a couple of weeks ago, I wasn’t allowed to carry on a bottle of water that I had filled up after security. Fortunately it was disposable and I was just able to toss it. They were checking all carry-ons one last time as we were boarding. Those flat water bottles look great, but I would have hated to have had to toss one.</p>
<p>These are great ideas, thanks everyone. </p>
<p>Some people might like the TravelRest Ultimate Travel Pillow. I have one and I like it because it is so small deflated and surprisingly comfortable once you figure out the best way to use it (you need some patience). It does look a bit awkward, but comfort trumps that for me.</p>