I think this is really cool. I’ve never had a terrarium, but I kind of want one, especially if it’s going to be in such a cute little jar! This one is available at Made By Mavis’ Etsy Shop for $39 plus s/h. Apparently it’s a slow growing moss that requires little care. I just think it looks cool! Mavis has more available in different sizes and containers and they are all really cool! Go check it out!