Earliest memories/signs of plurality?

[voxel]

While We only accepted Our plurality a few years ago, We've definitely had ongoing plural experiences since We were a toddler.

Our earliest plural memories are of becoming other people (mostly Our one friend—factives represent!) sometimes, and of autonomous imaginary friends (one of whom is still around as Aspen).

What are y'all's earliest memories of being plural? If you became plural more recently, I'd still like to hear!