We currently have over 3500 unanswered questions on Security.SE.
Whether or not you are after some hats for Winterbash, or just want to find some posts you could provide answers to and gain rep, please go and have a look at them. There are bound to be some in there in your field of expertise, or that you can research.
I'd be delighted if we could get it down to 2000 before the end of Winterbash - even if it means it's not just Anders and forest ahead of me on the Security Winterbash leaderboard!