To add a gadget, just follow these steps:
- Select Insert > Gadget. The Add a Gadget window appears, where you can select gadgets in a number of categories, including charts, tables, and maps.
- Click Add to your spreadsheet to insert a gadget.
When you click a gadget in your spreadsheet, a gray border appears around the gadget, along with a Gadget drop-down menu. Click Gadget to open the menu and select Edit, Delete, Publish, or Add to iGoogle.
Interested in creating a Gadget of your own? Check out the Google Gadgets API and the Google Visualization API. For help using these APIs check out the Google Visualization API forum and the Google Gadgets API forum.