Marimo balls are live plants that grow in water. The one with the “hat” (on the left) is LUFFY, and the one on the right is Zoro because it looks like his head. Luffy and Zoro are characters from the anime, One Piece. Luffy always wears a straw hat and Zoro’s hair is green. I think I’m funny hahaha.
The container was from Daiso, and so were the pebbles and decoration.