 If you liked Gake no Ue no Ponyo |  ...then you might like Mushishi Zoku Shou 2nd Season |
all of miyizakis fantasy work is very similar to mushishi, aswell as the natsume yuujinchou series. Also if youve already seen the above mentioned then i would also watch both seasons of moyashimon, its got a very similar wabisabi effect based around simplicity and the mysterious beyond.