A few weeks ago, with photographer Jerome Tso in tow, I got to tour the 787 Dreamliner Gallery, which is where airlines go to shop for the specific components they’ll put in their planes.

My story about that visit (with Jerome’s great photos) will appear on USATODAY.com (and in the paper) next week, but I wanted to share a few of my favorites from that tour.

(Seat choices in the Dreamliner Gallery)

(The colors and materials gallery for the 787 Dreamliner)

Today, Wednesday, Feb. 3, on a tour of  Boeing’s third flight-test 787 Dreamliner, I had a chance to see how the components from the Dreamliner Gallery fit together.

There are six planes in the flight test program and this one – the interior test plane – is the first one to be equipped with seats, lavatories, overhead bins, galleys and some of the other components that passengers care about – like the shade-less windows that can be dimmed just by pushing a button.

It’s great to see just about everything on a brand new type of plane, but there were two items from today’s tour that I found especially intriguing.

The first was in the bathroom.  In addition to touch-less faucets, the lavatories on the 787 Dreamliners have an infrared feature on the toilet that not only flushes but closes the lid!

(Wouldn’t that be handy in your house?)

The other feature that caught my eye was a bit of a mystery.

It looks at first like one of those tiny coat hooks that will fold out from the wall but lie flat when not in use.

But this tiny panel has a cigarette butt symbol on it.

Well, according to the Boeing officials showing us the test plane, even though smoking is indeed not allowed on airplanes, the rules still require that there be ashtrays.

So Boeing set out to design the teeny-tiniest ashtray allowable and came up with this cute one-butt model.

Thanks for visiting Stuck at the Airport. Subscribe to get daily travel tidbits. And follow me on Twitter at @hbaskas and Instagram.