What tool, device, or software that you used a lot, but then disappeared from your life (or from the world), do you miss the most? 
CD-ROM drives that can read and burn as standard in (most) computers.
@Em0nM4stodon open windows on SunOS with a sparc keyboard with cut,copy,paste,front keys
@Em0nM4stodon
I missed old Google so I subscribed to Kagi.
@Em0nM4stodon My Braille Notetaker I used in middle and high school. I did a lot of my schoolwork on it. I still have a notetaker, but never really need it since I have a laptop.
@Em0nM4stodon Firefox OS (#fxos)
@Em0nM4stodon wordstar word processor
@Em0nM4stodon A laptop with an exterior battery-level indicator.
@Em0nM4stodon Google Reader and Hypercard pop up immediately, I really did like using Dreamweaver once upon a time
@Em0nM4stodon I miss Urly Warning.
@Em0nM4stodon Google Reader.
@Em0nM4stodon The old Apple Mac "Graphing Calculator" app.
@Em0nM4stodon StumbleUpon.
@Em0nM4stodon I miss both my iPod 3rd gen and the Psion 5MX. Those two devices were almost physically attached to me for ages and I still think they’re both better than much of what we have today.
@Em0nM4stodon
Light switches.
(@m0rpk filled the house with smart bulbs & now I have to find my phone to make the lights do stuff)