“Teru teru bōzu てるてる坊主 (shiny-shiny Buddhist priest) is a little traditional hand-made doll made of white paper or cloth that Japanese farmers began hanging outside of their window by a string. This amulet is supposed to have magical powers to bring good weather and to stop or prevent a rainy day. ‘Teru’ is a Japanese verb which describes sunshine and a ‘bōzu’ is a Buddhist monk.”
— Wikipedia.
Via 7E55E-BRN ♥ who made the fine Teru teru bōzu shown above.