With the iPort, you could theoretically have an iPad conveniently in every room. iPort will be launching the Control Mount Series for the iPod touch and iPad, later this month. The product is a wall-mountable frame that holds your igear in place, so you can use it as a touchscreen to control anything from your music to the temperature, depending on your apps.
They are priced at $250 for the CM100 and $499 for the CM2000. Obviously, you could make it yourself for much less.