The 'save' icon is fading away pretty quickly in common usage. Modern software is trending toward changes saved in realtime (driven by phones, also seen on OS X and web). When I write a note, I just make a new note, type in it, and close the app.

My favorite example of old-timey icons is 'phone'. https://www.google.com/search?q=phone+icon&tbm=isch

Still used everywhere, but phones just look like ▯ now.