I want to do some more covers....ideas??? thanks!!!?

what is a good song to do a cover of??? Taylor Swift is my favorite artist......i sing entirely too many of her songs though. Please give me ideas.....thanks ;) i'll sing anything. i like all kinds of music. I recently did covers to baby you wouldn't last a minute on the creek by the chiodos, never say never-the fray, brand new-seventy times 7 and fifteen by taylor swift.....thanks