This is by no means a comprehensive list, but I think it serves the purpose of showing how much things have changed in such little time.
(If you read through the comments, there’s also a great link to a comparative photo of various hard drives on wikipedia.)
My first “real” computer, which I got in 1991, was a Macintosh LC. It came with 2MB of memory (which I upgraded to 4), and a 40MB hard disk. I later added a 230MB (remember, these are megabytes here, not gigabytes) external drive when the technology became available/affordable for around $300.
Now I carry around several gigabytes in my pocket! Seventeen years is a long time when it comes to technology. (Let’s not forget the 2800 baud modem I had at the time, compared to 3.0 DSL service I have now.)
As long as I’m in “old guy reminiscing” mode, I’ll mention that years before the LC, my parents had gotten me a Coleco Adam, which used cassette data storage, similar to what’s shown in the article.