At age almost 3, I stood in front of my entire church and sang "Away in a Manger" all by myself for the congregation. While I do not remember it at all, it was apparently adorable and I had no fear at all at the time. Someone asked me to sing and I sang and I loved it.
Something I do remember is a year later at Sunday School they had a cake to celebrate my birthday (and probably other birthdays of the same month, I'm guessing). They tried to hand me a lit candle and make me light a candle on the cake. I was scared, afraid I'd be burned. I was turning 4, I had no business with a lit candle! They made me do it. I didn't want to.