What about the Gramophone, or the Nixie-tubes in the VTVM (or the VTVM itself)?

Ever try to get a heading off a GPS when bushwhacking through heavy undergrowth in a deep, tree-filled canyon? Magnetic compass will never be fully obsolete, not for the deep back-country. Not to say it has to be a little spinning needle in a plastic case -- the "digital compass" in my wristwatch works just fine for those rare times it has been necessary.

CD's are in decline, though I'd hope they don't go obsolete TOO soon (I have too many, but then I still have hundreds of LP's, too!)

I appreciate the link, but while rotary phones may seem to be obsolete, it certainly isn't because of the iPhone. If you don't believe that, then try to get your iPhone to work after a blackout or natural catastrophe. Landlines are the only option then and only with phones (like the rotary dials we sell) that don't require AC current.

There is a trend to be discerned, here. "Bits." When music was "carried" by shellac, then vinyl, then plastic (CDs), we had electromechanical players and physical distribution (e.g. record stores). Today, music is bits. No need or anything other than network distribution and digital reproducers (iPods, MP3 players). The same is true for cameras - we needed film and paper to carry images. Now images are bits. No need for 24-hour developers, 35 mm film, and so on. Video still has carriers (DVDs), but not for long. Like music, video will be distributed via networks and played on non-electromechanical players. Anything that can be reduced to bits will intermediate the carriers and physical distributors.