Here’s a cool software which I recently discovered: Konfabulator .
Konfabulator is the kind of software which you can customise to make it whatever you want it to be.
In their own words:
Konfabulator is a JavaScript runtime engine for Windows and Mac OS X that lets you run little files called Widgets that can do pretty much whatever you want them to. Widgets can be alarm clocks, calculators, can tell you your WiFi signal strength, will fetch the latest stock quotes for your preferred symbols, and even give your current local weather.

When (or if) you install konfabulator, grab your bonus widget here.