A Silver and Gold Commodities Gadget you may like to use if you are interested in the prices of these metals. Note that the gadget appears to be broken, please get instead the free Currency Gadget. Run the .gadget file to start enjoying it immediately, or save it on your disk to install later.
This is a free gadget that will let you monitor your stock. In the settings you give the symbol of your stock (e.g. MSFT for Microsoft, GOOG for Google, etc), the amount of the stocks that you have, and a refresh interval (default is 10 minutes).