Star Hopper! My first and only pony for all of childhood, as I didn't get into collecting until g3 in the mid-2000s. I didn't even know that MLP was a franchise when I was young lol. My parents were very traditional, and preferred us to play outside, rather than with toys. I didn't even have cable tv until I was 18.
My sister had Glory, and I had Star Hopper, both carefully chosen at a school-organized rummage sale. I loved Star Hopper so much. I would sleep with her next to my pillow, and turn her so when I opened my eyes every morning, I'd see her looking back at me. In elementary school ceramics, I made a clay version of Star Hopper (which aside from the colors didn't look anything like her lol). Somewhere in late high school, Star Hopper got misplaced in a box or somewhere D: My sister let me use her ebay account and we spent hours looking for another. I was probably 16 or 17 at the time. That was when I learned my glittery unicorn actually had a name - Star Hopper - and that oh my heavens this wasn't a one-off, there's like a whole WORLD full of these ponies! I bought the only Star Hopper I could find, which happened to be the white-haired mail order one. A year or so after that I found my original, so I had Star Hopper twins! (I named the mail order Sky Hopper)
Now of course, as you can see in my sig, I've got the full sparkle collection. They will always be the favorites. When I'm old and wrinkled and gray and have donated all my ponies, I'll still keep my glittery sparkles, and I don't know... will them to someone else? I've considered being buried/cremated with my original Star Hopper, but will I still care about that 30+ years from now? We'll see I guess.