You've probably had the problem of too-few or very inconvenient AC-power outlets when traveling, whether at a hotel room or an airport. When you need to charge you PC, your phone, and maybe a few other items, and there is only one, maybe two outlets in sight—well, that's frustration.
Airports can be especially tricky, since there are usually very few outlets, often located in dark corners, low down by the floor, or in other awkward, inconvenient places, with lots of folks trying to get to them. I once saw an airport business traveler who pulled a full-length AC outlet strip out of his bag, and then settled in for a several-hour wait for his flight while charging everything in his bag—very understandable, absolutely.
I could have had this problem recently when I was traveling, but I didn't. Reason: I used this mini-expander I bought a few years ago at a local Home Depot for a few dollars (see photo).
It's small, light, and makes one AC outlet into three—and that's enough to cover my travel needs. As soon as I saw it while browsing up and down the store's aisles, I knew it was a "good thing" which would be handy in the future. And I am glad I bought it when I saw it, since I saw it there only that one time. [I once thought about building my own very small three- or four-outlet box/strip, but decided against it due to packaging and safety issues.]
I am pretty sure I could look at some web sites with all sorts of handy gadgets and accessories, such as Extreme Geek, and find something comparable. But that's another thing to have to do, and sometimes it's better to have these useful accessories ready and on hand for when you unexpectedly need them.
And it proves once again that sometimes we derive great satisfaction from a crisp, clean solution to a small but nagging problem. ♦