Gadgets for the sidebar are coming out thick and fast - just check out the Windows Live Gallery where you can download gadgets for the SideBar in Vista or for your Windows Live Homepage.
My latest find is the postage calculator for the Royal Mail in the UK - very handy for small businesses and consumers!
You can download it here!
What are Gadgets?
Gadgets are mini-applications that live on your Live.com homepage or Windows Sidebar and deliver games, live webcams, traffic maps, and other interactive, up-to-the-minute that you didn’t even know existed!