Homemade bbq sauce?

Hey everyone, I really want to make pan-cooked bbq chicken for one of my bento, but I am very broke because of Christmas shopping! (Seriously, I can't even afford to buy a bottle of bbq sauce right now. >_>) So I was wondering if you had any recipes of your own? I'd rather it not be too complicated--after all, I am broke. But I do have worcestershire sauce, ketchup, various cooking wines. The flavor doesn't have to be EXACTLY like bbq sauce, just similar and somewhat sweet--maybe even a little spicy. Thanks for your help!