Wishlist
Make a post in your dA journal. The post should contain your list of 10 holiday wishes. The wishes can be anything at all, from simple and fandom-related ("I'd love a Snape/Hermione icon that's just for me") to medium ("I wish for _____ on DVD") to really big ("All I want for Christmas is a new car/computer/house/TV.") The important thing is, make sure these wishes are things you really, truly want.
If you wish for real-life things (not fics or icons), make sure you include some sort of contact info in your post, whether it's your address or just your email address where Santa (or one of his elves) could get in touch with you.
Ste