Ring

My alarm wakes up the entire family. When I get up, they get up. There's something about having barely-awake but needy 2 and 4 year olds running around that suck all the productivity out of the morning! Enter "Ring".

I saw this on Yanko Design and SlashGear, and thought it was pretty handy (pun intended).

Placed in the charging station, you can set alarm times for each of the two adjustable rings. At the prescribed time, the ring vibrates on your finger to wake you, and only you.