I'm not sure what the very first one was, but I think the one I used most as a kid was this one or something similar (family computer):

https://www.qvc.com/hp-7915-celeron-11ghz-pc-w-128mb%2C-40gb%2C-winxp-%26-monitor.product.E108100.html

I don't remember my first laptop but I got it in 2010ish around the end of school.

My first cell phone was from Cingulair in 2004 or 2005? A black flip phone. No idea of anything else about it, except that I ran up the texting bill and it had an internet button right on the keypad which I was constantly hitting on accident. That's probably how I developed anxiety now that I think about it.

My first smartphone was a Nokia Windows phone. Looks like Lumia is what it was called...maybe the 520? Also black. I got that around 10 years ago. I didn't even want it and I've always regretted it because that was when I really started getting attached to my phone. All these apps and stuff...yuck