I remember a few things from age 2 (and possibly younger). I was in this inflatable boat shell thing with water wings on in a swimming pool. I remember visiting my dad's cousin and their weird chairs. I remember these cheap plastic baby clothes that hurt my nipples and I hated wearing them. I remember being in a sandbox and getting scared and running back into the house.
I remember these things because there are pictures of most of them or something weird happened that scared me at the time. So like if there's an old picture, I could call back directly to that moment when I saw it at age 3, 4, 5, 6, etc. By the time I was old enough to remember, "that was a long time ago, I should hold onto that" I didn't have to look at the pictures anymore. I also lived in a different house when I was 2 before we moved to where I've been for the last 23 years. So I have this easy demarcation in my brain of "baby years" and not baby years.
I do have some vague recollections of being in a stroller, but it's possible my brain is manufacturing those memories. I don't have anything to back them up. I definitely remember being three and four, too.