The upcoming Spicebird 0.7 will support iGoogle applets. You will be able to add iGoogle's Applets to Spicebird's home screen, along with the current Applets. Most of the current applets on iGoogle work on Spicebird.
You can add an applet by dragging its image on the "Add Stuff" page in iGoogle, into the Google Applet in Spicebird. The image on the right shows a Google Maps applet added to Spicebird's home screen