Like a lot of harp players one of the first tunes I figured out was When the Saint's Go Marching In. Somewhere I've got a recording where I kept moving the entire riff around to different spots on the harp. I don't think I could even bend at the time, but I switched modes and it ended up sounding pretty cool. (Longer riff than what you are doing, but same idea.)
I've also got a couple riff that I cheat with- I play them on a major harp, and then, for a different song, I play the same riff shape on a minor harp or harmonic minor, and get entirely different sounding tunes. :)
