Now i have seen that there are not Mageia stickers but the admin have reply to my question:
mageia4-is-now-out-why-not-to-compose-a-sticker? http://unixstickers.uservoice.com/forums/240385-general/suggestions/5544202-mageia4-is-now-out-why-not-to-compose-a-sticker-?tracking_code=74a7b7e6270b1b63ca589e8c0c8a1251
The admin have reply me:
Thank you, Mageia will be soon included in our collection
http://www.unixstickers.com/