The Takuto Kashiki manga from Fellows then Harta is a 2011 iyashikei/healing series about the daily lives of 9cm girls “Living in a tiny house in a tree, riding insects and birds, and making umbrellas out of leaves.”
Postcards (varried by time of day collected) and a stamp rally promoted the series at last weekend’s Machi ★ Asobi event.
Plans for the anime adaptation of Hakumei And Mikochi – Tiny Life In The Woods (aka Kobito Hiyori) have been updated with the news that the series will broadcast in the winter season, starting January 2018.