SheevaPlug, a tiny plastic “plug computer” that you plug into an electric outlet, includes a 1.2 Ghz application processor running Linux with 512 megabytes of RAM and 512 megabytes of flash storage, and USB and Gigabit Ethernet sockets.

By adding peripherals and software, it can become a network server, security camera to the Internet, video stream storage device, and serve other functions. Price is $99; it may be available for under $40 in two years.