3♦ Three of Diamonds in The Rock Songwriter’s Deck: 52 Ways to Write a Song
The Three of Diamonds asks you to find a public-domain folk song and update the words and music. But the resulting song doesn't have to be in a folk-rock musical style! You get extra points if listeners can't tell that a folk song was your starting point.
Modernize the rhythms, the vocabulary, and the structure of the song, and dress it up in the garb of your favorite current musical style.