What happens when that cool new thing that you got suddenly becomes the cool new thing that everyone has? Trend Setters (god I hate that term) either move on to the next new thing or redouble their efforts to bring personal ownership to their products. Creating an accessory culture around new products may prove to be a way to keep these early users engaged.
Steve Portigal has an interesting post on Crocs culture and the emergence of charms in Japan and the UK (see picture above). Apple has also inspired a ton of secondary markets for its products from the useful iPod Skins to the scary-but-true Taser/iPod holster that was displayed at CES.
My personal favorite are the iColour modifiers which allow you to take that boring old glowing Apple logo and modify it to your own liking, gaining the ire of your IT dept. at the same time.
thedistillery 