Clamshell phones
I really miss the clamshell phones, the last one I had was a SonyEriccson W300. But if I remember well, one of the first ones was the StarTAC, which I loved: big when open, but small when closed; being able to carry it without having all the buttons pressed.
Motorola has mostly kept with the clamshell devices (at least the last time I looked 'em) while others have ditched them. One of the reasons I didn't buy a SonyEricsson handset when I changed handsets was that SE didn't release any other W-series clamshells after the W300. Instead, I went for a BlackBerry Curve; if I'm going to have a huge-ass mobile, it should have a proper QWERTY keyboard to justify the size.
It's kind of sad that Motorola's cellphone business seems to be on the fritz, it used to have the best mobiles around; my StarTAC even survived a street fight without failing (they did make 'em tough!) and my friend's 120t survived a world of abuse, due to its owner using the phone for things it wasn't intended to... like opening beer bottles, or as a hammer.
Funny how current trends seem to go down the 'shiny but fragile' road; just look at the iPhone. I'd like to see how well it would fare after rolling one floor down the stairs (like my W300), falling into a puddle under heavy rain (again, my W300) or flying 20m from my hand and falling hard to the ground (my BB 8300). I even doubt an iPhone (or any iPhone look-alike) would survive the sheer pressure of squeezed-together people you normally see in the subway's peak hours!