I can remember being in my crib in my room, standing up and waving my soft toy penguin named Poosie (my older brother had one called Percy penguin and being a little brother I naturally had to copy but couldn't actually say Percy) around and being careful not to throw him out before flinging myself down onto the soft covers. I assume I would've been perhaps 2 or so at that point but I don't know, it's hard to be precise!