What's on your sidebar? Well, nothing much on mine, until today. I just read a post on Rob Farley's blog, pointing to SSIS Junkie Jamie Thomson. Jamie and his colleague John Rayner developed a useful gadget, where you can connect to your favorite database and monitor file size and usage. Actually you see the sum of your data files sizes and the sum of your log files sizes (if your database contains more than one of each). Easy to use, just type the server name, database name and the polling interval and you're set (Jamie's original post has the instructions as screen capture).
You can have this gadget more than once on your sidebar with different connections, but I would like to suggest to Jamie and John to allow for a list of databases to be polled in a single gadget (you can still keep multiple gadgets on your sidebar, one for every server / instance).