This year my church had a Christmas Eve Eve service (Dec 23rd). My wife came up with the idea of setting up a couple of trumpets outside the church building and playing carols as people were entering.
It was well excepted. People were a little confused thinking that they were late - or maybe the roof caved in. But they enjoyed hearing the songs as they got out of their cars and walked in.
I did have someone leave a $0.25 tip on my stand. I think it was the drummer.
Maybe an idea for others next year.