Back in the early 1990s I bought a book by leading Norwegian ethnobotanist Ove Arbo Høeg (and Helga Hjort) “Barkebåt og kongleku”, all about games children played with plants…at least one of these games I remember teaching my kids…using the flowering stems of Plantago major (Greater plantain / storblad or kjempe)…and the same game turned up in Japan!!