Something to play with for the Logitech users among us,
Windows Vista Gadgets & Yahoo! Widgets
Windows® Vista™ Gadgets
* and Yahoo! Widgets
** for Windows XP are tiny applications designed to increase your digital productivity and online fun. They run in the background on your computer, so they're always handy but never in the way. Now they're available for free to use with Logitech products!
Says for Vista, but haven't come across one yet that doesn't work on 7. The keyboard and mouse battery ones look interesting, would test them if mine were wireless.