If you'd asked about 4 months back, you could have had a lot of stuff, most likely. Persimmons, apples, and various nuts being the primary things. Right now you're not going to find a lot of wild things that will go well in beer (other than maybe tree parts like spruce, sassafras roots, spicewood, juniper, etc) in and around Boone. You could probably find some wild edibles, however.
Where I live now, I've not found a lot in the wild that might go well in beer at this time of the year. Later in the season, there will be blackberries, grapes, blueberries, various flowers, herbs, and other things.