Install iGoogle Gadgets in GMail
A recent GMail labs feature "Add any gadget by URL" opens the gates of GMail to gadgets which were previously destined to reside only in iGoogle. But unlike iGoogle to add a gadget in Google you have to jump through hoops and loops.
- Go the iGoogle gadgets directory
- Find the gadget you want by searching or by browsing. Click on the name of the gadget to get a detailed view of the gadget. In that page on the bottom right hand corner you can find a link called "View Source" under the heading "For Webmasters". Right click the link and copy the URL. ("Copy Link Location" in Firefox and "Copy Shortcut" in IE)

- Now open Settings in GMail. There will be a gadgets tab if you enabled the lab feature. In the text box provided there paste the link obtained in the previous step and click "Add"
- Pray that your gadget works successfully :)