autumn chestnuts in green spiky shells, perfect for fall-themed s, harvest festival promotions, or healthy snack packaging

hazelnut nut flat snack autumn health cooking diet garden farm brown seed food green natural botanical nutty flavor foliage organic healthy tree outdoor delicious seasonal cartoon isolated crunchy round fall ingredient tasty drawing sketch edible autumnal nuts rustic wholesome harvest nature rural raw unprocessed earthy simple fresh woodland agriculture chestnuts spiky shells perfect fall-themed designs festival promotions packaging