Special note from the author:
In another life, I'm a member of a little software company that makes clock applications for the iPhone. And now we have an app for the iPad that should be of particular interest to owners of small observatories. It's called Emerald Observatory and it's chock full of astronomical information:
If you have a need for precise time or for the times of astronomical events (or just want something cool to sit on your desk) please see our website for more details. And it's only $0.99! (But you might decide you need an iPad just for this :-)