abhinav-chittora/Google-Gadget-Sidebar
This addon puts google gadgets into firefox sidebar. For this you don't need to have a igoogle homepage, and still you can use any sort of gooogle gadget.You can save any number of Google Gadget and can use them. There are more than 10,000 google gadget available. Putting google gadgets into sidebar allows you to surf the internet and use google gadgets simultaneously. So enjoy!