Want to take your Pi project mobile, or maybe prototype a mobile project with your Pi? These tutorials teach you to build a Raspberry Pi laptop, handheld, and Google Glass-style wearable HUD.
This step-by-step guide from the folks at Adafruit Industries shows you how to use the Atrix 4G laptop dock to build a Raspberry Pi laptop for around a hundred bucks USD. (The Motorola Droid Bionic “lapdock” works for this as well.) Since the Atrix phone was discontinued, the laptop dock has found new life as a Pi accessory -- there’s a bit of soldering involved, but the tutorial walks you through step-by-step.
If you’re a little more ambitious and have a little more money to work with, you might try building a mobile Pi terminal from the ground up: