Flowers or feathers would look amazing. maybe next year's apple blossoms! Do multiple of these then frame as if the were window panes. Place a large old frame (outside frame only) around it to form a faux window.
DIY wood polish Simple and Cheap Homemade Method to Refinish Wooden Furniture Olive or Vegetable Oil – About ¾ cup White or Apple Cider Vinegar – About ¼ cup Just mix together and dip a rag into the mixture. Then, just wipe your furniture down with it.