Helbreath T-shirts!

My proposition is not directly ingame things. I didn't find much about TShirts with HB in internet. From another games there are a lot gadget like cup, tshirt, statues, etc but HB maybe found one with ugly giant mountain... I would like really buy nice HB tshirt even with Olympia logo! Also get extra coins by buying tshirt. What do you think about it guys?