Oh, now i noticed the 'wicker' word in the title! So here is my example of these cases...
I found about 100 of these at an old barn in Crete. They were used as insulation of the barn's rooftop!
I managed to get one and my friend that pointed the location took the rest of them! Unfortunately all that was left were the two parallel wicker plates and not the 4 verticals nor the bottom or the top of the cases...
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