Giving is clearly the best part of Christmas so why not indulge yourself:
Books for goats, Valyrian Steel
Help Heifer International end hunger and get some sweet things from Pat Rothfuss and his awesome pals (think of a fantasy author, they’re probably in). Donate anything and you’re in the lottery to win rare editions, signed editions, other lovely extras, or if you think I’ve been an especially good boy this year (I have, I really really have) you can buy Longclaw for me and sleep safe knowing that you’ve helped a whole bunch of people feed themselves and that I’m safe from reanimated corpses (other goodies are up for auction).
A bunch of children’s hospitals have Amazon wishlists, you can buy the toys and games they need so kids in hospital over Christmas have decent stuff to play with. Close to home there’s Bradford, Manchester, Alder Hey, Sheffield, and Dublin, but there are hospitals all over the world you can help out or you can donate directly to Child’s Play.
Support Wikipedia. You almost certainly use it, and you probably ignore the fundraising message when it pops up. Pay the £3.
Even if you’re trying to keep Christmas small you are probably going to spend a hell of a lot of money, and a decent amount of it on crap, make sure you give something to a decent cause.