Well I dug around in the percussion section of Halion SYmphonic Orchestra and found some sleigh bells.

However, they don't sound anything like as jingly, crisp and atmostpheric as those you hear on the radio at Xmas.
Is there some magic formula of effects / reverb to make sleigh bells sound great?
Or have I just got some naff samples?
One idea I have is to actually buy some sleigh bells (I think you can buy them quite cheaply... around £15) and play them along to the track

.
I havn't yet come up with a tune, but I was doodling at the piano last night and played with a few ideas.
It seams to me that most Xmas songs are built around quite simple harmonies, so I'm sure I'll find something soon.
Anyway, it seams there is some support for this idea already.

Who else wants to give it go?