The MK802 may look like an ordinary USB stick, but it’s a fully-functional computer.
Of course, you need to attach it to a display, and connect some sort og keboard/mouse combo, but the MK802 could be the smalest PC around.
A Chinese manufacturer has created the MK802, which is a more affordable version of the same device.
There are, of course, some trade-offs involved here. The MK802 is from an unspecified manufacturer and has a single core 1.5Ghz processor. Also, the HDMI is a connection rather than a socket, so you’ll need to use a cable rather than just stick it into the back of a TV.
The MK802 comes with 512MB of RAM, WiFi connectivity, and 4GB of internal storage. There’s a undetermined “3D Graphical Processor” inside, whatever that means, but it does come with a plethora of cables and adapters for connectivity It comes with Android preinstalled, although you should be able to load other platforms onto it.