What do you do with lingots?
How do you spent your lingots? There is so few options in lingot shop and I don't really see anything interesting to do with them. I really want Duolingo do something and make it worth to gather lingots.
Well, some languages have extra lessons that can be bought with lingots. If you use the mobile version you can also buy two suits for Duo, the Owl. It is anyway not useful for anything else.