I tend to agree with the looming extinction of iPods and the mouse. Since nearly all mobile phones can do music and many can do video . . . a dedicated media player may be as redundant as cheap digital cameras are now.
The computer mouse might be done in by the very company that pioneered its use in personal computing, Apple. The multitouch pad, including the newest Magic Trackpad accessory, combined with operating systems that are touch based, might be the future.