You can even use your iPad as a second monitor with an app like Duet. But neither of those options will give you what you're really craving – a take-with-you display that expands to a full-sized monitor so you can get some serious work done when you're on the road. The Spontaneous Pop-Up Display (SPUD) from Arovia, exhibited at this week's South By Southwest Festival (SXSW), will be exactly that.
SPUD starts out about the size of an Apple TV, which means you really could tuck it away in your back pocket. Then, by simply unfolding the device, much like an umbrella, you wind up with a 24-inch high-resolution rear-projection screen that can receive input either through an HDMI cable or wirelessly, using the Intel's WiDi protocol.