Such a cute idea if your toddler was a bit older. I don't think a 2 year old would get it or happily give up a toy they've been looking after for months personally (just from my experience of my daughter at that age although of course they're all so different). What about putting the stocking up and getting toddler to make something to put in it for baby, a card or drawing or something like that.
It sounds like a really cute idea. 🥰 Would your 2 year old give it to the baby once they’re here? I’ve heard of stories of people giving the older sibling “a gift from baby.” I’ve heard it helps the older sibling feel loved/appreciated/special during a time where they might be prone to feeling a bit less attention because of baby. Just some thoughts!