Maybe this would be pointless, but it would be cool to have some audio only devices.
By this I mean something like an ipod/mp3 player. You'd have headphones, a volume control. If you had the volume way up, you'd essentially be ignoring everyone else.
You could download songs off the Grid a la iTunes. Songs would be written in BabbleScript.
Musicians would actually be able to make a living by selling there songs, through something like the memory modules you stick in an e-note or by 'uploading' them to the Grid.
You could even record 'radio programs', like podcast type things. It would be audio only though, so you'd see your commuting corpies plugged in to their favorite talk show, or listening to the newest hardcore jazz trance.
Hell, you could have hi-fi stereo systems built in to the classiest apartment complexes complete with visual effects....ahhh...