I browsed the internet once I got home, and decided to bake a cake with big green clover icing. I tried to make the clover then, but it was really difficult! Instead of a clover, they turned out to be either a huge abstract leaf, a green flower, or a green tree (>.<).
In the last minute then I got some ideas of green Indonesian's traditional dessert from my friends via facebook. I decided to make 'klepon', small balls of green rice cake filled with palm sugar, and covered by grated coconut. I made some modification though, I used Japanese's rice cake's powder to get a stronger chewy taste instead of Indonesian's rice powder. I colored the grated coconut in green, so here is Iki's school St. Patrick's Day's dessert :))
I didn't expect that they would love them :p