. . . the automatic doors at Stater Bros. (local grocer).
. . . my first ATM cash withdrawal.
Oh, yes. The first ATMs were amazing in a time when bank tellers were the only place you could get money, and banks closed at 3:30, except on Fridays, when they were open until 5. I found that exciting enough that I made sure my first checking account (when I went away to college) was with a bank that had them.
Electronic scanners at grocery stores were impressive when they first came out too.
E-mail was another thing that was exciting when it first came out. The first time I had an account, I was in grad school. Most of the world wasn't on e-mail yet, but I could chat with my dad, who was at a university in another state, and I could flirt electronically with the guy who eventually became my husband.
Amazon was definitely exciting to me when I discovered it in the late 90s. I was working in a tiny college town in Northern NY, and it was the first time I'd lived somewhere that
didn't have a frigging bookstore. Someone told me that you could order a book on Amazon, and lo and behold, two days later it would be delivered to your doorstep.
Sadly (and ironically), Amazon's success means there are many more towns now that don't have frigging bookstores