The new Windows Phone app makes it easy to create synths of your own. Start it up, move the camera around, and watch your panorama fill in. Make a 360 revolution and watch it join up. Capture the floor and ceiling too. When you're done the shots are automatically stitched together. The panorama can be then published to the Photosynth site or share it via Facebook and Twitter.
If you have a Windows Phone running WP 7.5, go to the Windows Phone Marketplace and install it now.