If you don’t like being guilt-tripped skip this. The rest of you get your credit cards out. Here’s the deal. Figure out how much you are spending on Christmas/Holiday cheer. Figure out how much has been spent on you. Add the two figures together. Halve that figure and plug it in to the OxfamAmerica form or the Oxfam UK form (depending where you pay taxes—for other countries you can reach your own country by negotiating from the OxfamAmerica home page). (Note: if, like me, no-one spends anything on you at Christmas the decent thing to do is to skip the adding and halving stages.) If you are a utilitarian this is the best thing you can do, if you are a Kantian it is also the best thing as long as you don’t enjoy it (that’s a joke—I know Kantianism isn’t really like that).
Next year I’ll do this early in December so you can avoid giving presents to people you don’t like and, instead, send them an email saying you’ve donated X amount to Oxfam in their name.
Donations from non-celebrators of Christmas are also, I believe, welcome.