A quickie one!
cutesherry-san has scanned (EDITED on 31/01/2009: scans no longer available) the goodies that come with the limited CLAMP in CARDLAND PARTICULAR BOX. It includes scans of the cover (new illustration) and the two clear files featuring Kamui & Subaru and Vampire Fye. She also scanned things from the 5th Series.
Make sure to check out these rare illustrations in high resolution! And make sure to thank her ^_~
EDIT: As of today, the scans are available again at http://cutesherry.livejournal.com/20911.html =)