I was thinking of making a wonderbox ( its like a cloth
hay box or a giant tea cosy) but the instructions all seem to contain either
Polystyrène - not keen on that
Hay - mould issues
Or
newspaper -structural strength zero
So how about using acorns?
Would they be a good insulator?
David
Living in Anjou , France,
For the many not for the few
http://www.permies.com/t/80/31583/projects/Permie-Pennies-France#330873
