Which set does this small bag of LEGO pieces belong to? I just received a box of LEGO bricks and have no idea what sets they make up. This packet was in there unopened and thought someone might know where they are from?
All the pieces shown are used in Day 17 of the 2012 LEGO City Advent Calendar (4428). 

It looks like you only have 10 out of the 14 pieces required to build the model, the other pieces must have either been removed at some point or were never included (which is unlikely).