There is a Duran Duran commemorative plaque signed by John up for auction on Ebay. It was presented to John (as well as one to Simon, Nickand Warren) when Duran Duran received a star on the Hollywood Walk of Fame in 1993. John signed and donated this item to The Country School inLos Angeles for their annual silent auction to help raise funds for the school. It is up on Ebay through March 17, those who are interested can check it out here:

http://cgi.ebay.com/ws/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=850563072