I doubt that even his closest friends know which planet he is visiting at the moment and what is on his mind right now. The probability of giving him something that he will consider completely useless (like shaving cream for instance) is... infinite. Whereas things that would make him happy... Well, you will find them on his 2giv.eU WishBlog.
Here link to this crazy blog we discovered (and if you don't speak Spanish, learn it, it is worth it):
http://improbabilidadinfinita.