Asklemmy

I have the opposite: at work, I found a Sony Memory Stick to Floppy Disk adapter (with CD driver disk). Yes, you plug a Memory Stick into a dummy floppy disk, then insert it into a 3.5” drive to transfer files to/from your peripherals. If literally anyone pings me tomorrow I will post the most cursed 2002 shit I’ve ever seen.

3.5 floppy disks. They still exist and still get used. I used them regularly up through the 2010s.

I can't believe nobody said Star Trek. In the 70s you had reruns of the original series and the animated series short run. TMP didn't come around until the end of the decade. I wasn't there, but I imagine a 70s trekky would be damn grateful to have all the Trek we have today and they'd probably even love Academy (All the older not chronically online fans I know rave about it).

Edit: regardless of your personal opinion on nu trek, the answer fits the question. A trek fan from the 70s would be blown away by having 13 series and 14 movies available to watch on demand, plus books, games, etc.

Led mouse instead of trackball/mechanical mouse.

Obviously first is cell phones giving pocket access to the internet. And, what those two together have done to us. Along with, yes we all have video phones in our pockets, which would NOT be a surprise, but we don't use it that way very much at all, preferring to text each other. That would be a big surprise.

Also, OnlyFans.

Full body virtual reality is cheap and affordable ($1-2K vs $145K in 1994 and $Millions in the 70s)

We went from dumb terminals to personal computers, now were back to dumb terminals