This is the official Dir en grey fanclub. The only sad thing is that you must have a Japanese address to be a member. It also costs about 57 USD/year to be a member.
Upon joining the fanclub, you receive a package that is not sold in stores anywhere. It contains a metallic membership card with your membership number engraved in it, a keychain, and a cross pin. You will also recieve 'members only' offers that include news/information, presents, "Haiiro no ginka" a quarterly newsletter, you can buy tickets earlier, buy special goods, and special concerts are held only for [aknot] club members! We all wish we could join!