If you're looking for anime similar to Hoshi Usagi to Tsuki no Fune, you might like these titles.
In a gentle adaptation of Megume Nagata's book Flowers Wait for the Moon, a girl grows up, falls in love, and becomes a mother, realizing that her childhood is now forever behind her.
Foo, a kind boy, lives together with his grandmother. However, Foo has no friends. One day, as Foo is off picking herbs on a mountain to treat his grandmother's illness, he finds himself lost. But then he is saved by a boy demon with bright-red skin named Smoochy. The two kind yet friendless boys meet and become each other's first friend. The two begin to spend their days playing together, until one day Foo suddenly stops coming to the mountain. And then...
Every forgotten object has a memory with its previous owner still attached. This is a story of Moom, one of those memories stuck in this world. One day, Moom meets another memory just like him.