...or at least after finding these colorful bags, I assume he does. Take a look at these heavy-gauge plastic bags ($5 for 15) that he's designed. Made of a heavier and sturdier grade of plastic than your average sandwich bag, they're quart-sized to fall within TSA regulations. So the next time you need to pack your carry-on bag, your toiletries will all fit within these cheery bags.
I doubt I'd buy these for myself, simply because the cheapskate in me already buys the generic version of Ziploc. But for $5, I could imagine picking up a box as a little gift for jetsetting friends—just to cheer them up a little before they go through the drudgery of traveling.
15 Heavy Gauge Designer