Tonari no Totoro, Arete Hime Recommendations
Both of these anime have a similar calm, pace. Both are starring little girls. Tonari no Totoro is a bit more about the joy of innocence, where as Princess Arete is more about appreciating the little magic of life. I may be going out on a limb to say I prefer Princess Arete, but I hope you enjoy both!
Also either can be appreciated at any age.