This is an odd thing, but hopefully useful to someone. There
is free fleece available in Northern Virginia (DC area). I think it
may be angora goat. Someone raises them and has been shearing and
collecting the fleeces, but not doing anything with them. This is
info I'm getting
I would recommend actually trying a few of them, and take your own
fabrics to test with, samples of the things you typically sew. We
use such different fabrics than the general population that even if
the store has anything other than the stiff cardboardy test fabric,
it won't be anything