What to read at my niece's Bat Mitzvah?

I have been chosen to read at my niece's Bat Mitzvah. We grew up Catholic. My sister converted to Judaism when she married. I have perused poetry books suggested by the Rabbi and neither my sister nor I have been inspired by any of the poems. Have done some internet research with little success. Music lyrics, poems, readings, excerpts all welcome. The Temple is reform and my niece is reading about Noah for her Torah portion. So anything having to do with rain, rainbows or anything related to Noah would be great. Any suggestions from someone who has been there and done that?