More details on swishing.org (which, by the way, is an excellent place to find out about upcoming swaps near you). Alternatively, why not hold your own swish to mark the occasion? Swishing.org has a list of tips, although personally I favour the sharpen-your-elbows, free-for-all approach.
Here, to get you in the mood, is the kimono I positively seized from Mrs Loske-Page as she took it out of her bag at our last swish. Gorgeous, non?