Because we are into a run of stormy weather now is a good time to see if you can pick up some fallen dead Oak (Quercus) branches, or roots from windthrown trees.
I keep an eye out for accessible <"Stag-headed Oaks">, like the one below.
You won't get any really "twisty" wood, but...
I was on a Field Course last week in Dorset, and a lot of heather on the sand dunes at Studland etc had died in the drought.
You couldn't collect any dead heather from Studland, because it is a NNR, but there should be other heaths, moors and commons where there is dead heather wood you...