I just looked into this tonight! Weird.
Since Jeff and I are both German and Irish, I'd like to celebrate St. Nicholas Day on the 6th and St. Stephen's Day on the 26th, but with a twist. We won't be able to do these things this year, but I hope we're able to next year.
I'd like to discuss the real person of St. Nicholas and then have the kids put a pair of old shoes (maybe the same pair every year?) outside their bedroom door. I don't want to introduce another imaginary person into the equation, so it won't be St. Nick himself actually visiting, but we will take away their old shoes and replace them with a new pair with a few small treats inside. The main point will be, however, that in the spirit of St. Nicholas, they will need to use their new shoes to do something good for someone else and we will do whatever good deed that is as a family either that day or that week.
Along the same lines, I'd like to discuss the real Stephen from the Bible and explain the Irish tradition of Wren Day (an interesting and slightly morbid tradition) and that we are going to celebrate the spirit of St. Stephen/the monies that the boys collect on Wren Day. Jeff's grandmother is giving us a pig cookie jar (I think -- I have yet to see it!) that we're going to put our spare change in all year long and then open it on St. Stephen's Day and donate it to the less fortunate in some way to be decided upon by the family. Her husband is the one who was Irish, so it seems fitting to use her cookie jar.
I hope that this will be a neat way to celebrate our heritage as well as focus on giving to others rather than Santa/materialism/getting presents.