Hotel room hacks

Here is a WaPo article on hotel room hacks, a recent viral topic, and here are other recent sources.

My #1 suggestion is simply that some pillows are too high and too hard, so bring enough of your own cloth material so you can build your own pillow if need be.  And travel with an eye mask.  And always travel with a sweater, even in the summer — it is a remarkably versatile object.

I would also say this: when in doubt simply turn the heating system off, if you can.

What are your hotel room hacks?