Advent calendar!

I'm very excited to be working on a felt advent calendar for the kids.  I've been looking forward to this since last year, actually.  I think Blake will "get it" this time around.  :)

I found a pattern online, but since the source wasn't actually Christian (go figure...), I began a quest to develop my own.  Now I'm left to develop a list of symbols & meanings for each day.  I've got the "easy" ones, but I am afraid I'm going to miss something big.  Any suggestions?  Here are some that I've come up with so far, in no particular order:

star

candle

crown

shepherd’s crook/candy cane

wreath

bells

creche

gifts

wise men           

shepherds

bell

evergreen tree

angel

dove

lamb

donkey

music

bow

holly

mary & joseph

joy

heart

baby