Most artists that I have worked with will have a story about how we created a specific sound or feel for one of their songs, most times using an unusual and whacky method. I really do love to throw myself into unfamiliar sonic spaces when painting an audible landscape. It allows me to step outside of the box and approach the creation of music from an atypical vantage point, with the positive side effect of keeping the artist on their toes.
Formulaic writing can sometimes be advantageous, especially for the listener whom will unconsciously lean towards the familiar. But allow yourself to step away, hell, run far away from the norm. You will no doubt be able to look back in and understand how to be more unique with your craft. And your songs will thank you.