I am wanting to dig deeper into the low-level aspects of AVR programming.
Part of the bigger project more or less everybody is working on.
Motion Sensing Camera
To keep track of what my dog and cat do during the day.
Bloomington Crime Stats
I've scraped a bunch (12,000+) of local crime reports and geocoded them. Now need to open that up to Bloomington/the world.
FM (or AM) radio
Get a radio station up and running which will broadcast lots of text-to-speech goofiness, but preferably some useful info too.
Warning Light/Siren for Work
Hooks up to Nagios feed via the serial port. Displays Red/Green/Yellow light depending on current summary of how all the servers are doing. May add a fire alarm or such, if I feel like getting fired sometime.
Audio with Arduino
Get the Arduino to make all manner of freaky noises. May end up as a workshop at some point.