I've started planning/buying for Christmas super early this year. Dc will be 2 and as of right now (21mo) would have no clue, it would be meaningless and pointless.
I really wanted to get a fabric one and put a Christmas activity in each day but not sure if I should wait until next year.
Did your 2 yr old understand something like that? I don't know how much will change in the next 3 months and he's a bit of a late developer anyway.