Art, Link, Letter: Abba Richman's beautiful The Alphabet and Dean Allen's rustic Found Alphabet are collections of letter shapes found in various outdoor objects.
It took the Smithsonian author and naturalist Kjell B. Sandved 24 years to find all the letters that went into the butterfly alphabet. Along the way he found butterfly wings imprinted with salutations and smiling, happy faces, and threatening expressions on wings and flowers with menacing expressions that say "Do Not Eat Me". Explore the site yourself by going directly to the gallery without looking at all of the images I've linked to, or read the story of how Sandved discovered his magnificent obsession.
Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliet, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, Xray, Yankee and Zulu. Now I know my NATO phonetic ABCs, next time won't you sing with me?