The site is in Finnish - used dried stems of Deschampsia cespitosa (tufted hairgrass) and string this snowflake/star together with thread (not sure what to use for a needle). The author says that straw is too thick.
Varázspor: Estrella de la paja Creación - decoración Puerta grande
United Art and Education Original Art Project: Learn how to create a striking Himmeli (a traditional Finnish ornament) Star Mobile using straws and string! http://www.unitednow.com/product/10696/himmeli-star-mobile-project-71.aspx