If you feel the urge to shop, Kawabatadori Shopping Street is the place to go. Clothes, souvenirs and general supplies — you're likely to find it here.
You'll need to find your way to Hakata Ward to visit this shopper's paradise. If you plan to do some sightseeing after you're done, why not check out Ohori Park? It won't take long to get to from Kawabatadori Shopping Street.