A Raspberry PI NAS or network attached storage is a great way to have a shared drive that's accessible to everyone on the same network. You can limit access to the drive if you don't want certain people in your files.
Onion Pi: Browse anonymously anywhere you go with the Onion Pi Tor proxy. This is fun weekend project that uses a Raspberry Pi, a USB WiFi adapter and Ethernet cable to create a small, low-power and portable privacy Pi.
How to Build and Program a Raspberry PI Supercomputer Yourself
Raspberry Pi Home Automation
Build your own Mini Arcade Cabinet with Raspberry Pi #video_game #retro #nintendo
Create your own cloud server on the Raspberry Pi 2 Find your Pi here: http://www.mcmelectronics.com/content/en-US/raspberry-pi