Skyforge beta key? If so... wow, you are aiming really low when it comes to gifts this year. We usually at least would ask for a game, not test access to a game. Besides, you could get one completely for free by taking part in one of two contests. The first is a straightforward raffle-style giveaway on Facebook: Just "like" the game's page and submit your account email, and 500 lucky entrants will get a beta key.
But for those who want a key and prefer not to leave it up to chance, there's a forum thread asking players to name the critter they see in the header above. The five best entries will receive a beta key, followed by a vote-off of all the suggested names. So there's a chance at getting in just based on your creativity at naming things, which might be more your style. The name contest will run until December 22nd, while the Facebook entries are accepted until January 15th.
[Thanks to Gabriel for the tip!]