Instead of being plugged into the wall, the InkPoster is battery-powered and can last up to a year on a single charge. It comes in three sizes, with 13.3-inch, 28.5-inch, and 31.5-inch options ...

Why settle for a digital picture frame when, in the same wall space, you could mount an entirely functional computer/slideshow player/TV tuner? Lifehacker reader Justin took an old Sony Vaio ...