haha! now i'm doing a Jap Studies project on Fukuoka! what a coincidence... i'm concentrating on the Canal City (food, shopping, entertainment, culture) which has almost everything that you want and expect from a city... with an artificial canal, and the architecture the idea of a caucasian, it is one of the definite places that you must visit when u're there. there's a shopping building over there that solely sells sports good. u may try your luck there.
they're famous for a particular fish roe and also ramen... i wish i have the chance to go there too.... but no money... haha....