one of my projects is to make a straw rain coat or grass cape.
I'm in the stage of collecting references.
It seems that almost every part of the world developed his own version (also for clothes and shoes) and obviously it should be a functional equipment if so many adopted it.
Do you have first hand experience making it? pictures, tips ideas? it should be pretty good also as camo. Ghillie suit sort of.
I attach a pic of a very refined and still produced version.
googling you can find tons of others starting from Otzi one.