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.
Bring the outdoors inside with these floating leaves and floral works of art. This minimalist DIY project will look stunning displayed on a windowsill in your home and make a wonderful gift idea for a nature-loving friend DIY Crafts For The Home