button for "add gadget to windows sidebar" to be displayed on website

Hi,
Is there an official standard icon (like the orange RSS square icon) to be used when linking directly to a gadget on a website

We're in the last throes of testing of our newly developed site, and as part of our "proof of concept" work, we've added a gadget to get data from our shopping catalogue.

However I need to put a link on our site (much like the orange RSS icon) to indicate to users that we have a gadget for their Windows Sidebar. What should a button/icon like this look like

I've not found any sites yet that display a link with an icon (only ones with "add to sidebar" in text). Any idea

Thanks in advance :)
ObseloV