Happy birthday, mate =D
It's allways lovely to see another human being celebrate that they've managed to stay alive another year. Ahh. =)
As for what you can get. Well. If you make it to this vessel, I'd be happy to buy you a couple cartons of cigarettes, if you smoke. A couple cases of beer if you drink, a lot of coke (No. You badass. Not that sort), a lot of chocolate. And a toothbrush. Seriously all that crap is really cheap onboard.
As for my birthday? I make enough money to buy my own gift, so no worries. =D