Following up my earlier post on clothes I recommend for travelers, here is some tech I think is worth packing on vacation (as opposed to a business trip). (FYI, I don't receive freebies, payments, or commissions by mentioning any of these products.)
* Magellan's Dual-Voltage Power Strip ($30) supports North American and international electrical currencies and includes three AC outlets and one USB charging port. Buy the power adapter you need for the country you're visiting (about $7 each), and combined with this strip, you should have everything you need to recharge your laptop, tablet, e-reader, smartphone, digital camera, and other gadgets.
* BookGem stand ($15). This compact, collapsible stand props up your iPad, Kindle, Nook, and other tablets and e-readers for comfortable, hands-off viewing. Rather than pack my iPad 2 in a heavy case/stand, I protect it with Apple's Smart Cover, which is very lightweight, and I use the BookGem stand to prop the tablet for reading or watching video.
* Boostaroo ($25). All too often, an airplane's loud hum makes music and video harder to hear on my iPad or iPhone, sometimes even when I'm wearing noise cancelling headphones. So I always travel with this 'portable amplifier,' which boosts audio to a comfortable level and also allows you to plug in a total of three headsets.