Edit: Just to be clear this is a novelty item. You're not really going to get a piece of the moon. It's a gag gift.
How about this as a Christmas present to someone who has everything - an acre of the moon!!! You can get it at lastminute.com for £20 - but it's on special offer at the minute - if you buy one, you'll get one free!! This is the gift "to eclipse all others "!!! (Delivered cost is £23.50)
Details: Boldly go where no gift has gone before - dedicate a whole acre of the lunar landscape to your favourite cosmonaut. This truly unique present includes your title deeds, a position guide to help identify your plot, a moon map and a whole host of astrological accompaniments.