Dry air in hotel rooms is endemic, but a moisture-adding mist can be as close as your water bottle and a USB connection. Yes, the USB water-bottle humidifier for which we’ve all been holding our breath is finally at hand. The 2.4-inch-diameter device rests over the top of a water bottle, replacing the cap. It can be screwed onto the top of compatible bottles (not included, so you’ll have to experiment). A removable wick-like filter extends down into the water. Plug the included micro USB cable into your computer or other USB port, and the wick draws the water through the filter, converting it into vapor. Substitute liquid fragrances or essential oils for the water, and you get an aroma diffuser. The dim blue glow indicating the humidifier is working makes for a soft nightlight. The humidifier automatically shuts off after 8 hours, and comes with two filters, which should be changed every few months. Extra filters are available.
Satechi USB Portable Humidifier is $29.99; extra filters are about $2 apiece. Info at www.satechi.net.