Im planning to buy a lens accessories for my camera canon s3 IS, any suggestion ?

a wide lens, teleconverter lens or close up lens

Well, if you're only going to get one accessory lens, are you more interested in wide angle scenics, getting closer to your subject with the telephoto accessory lens or doing close-up macros of flowers or other objects with the macro? It's really up to you and the type of photography that you take!