Having created 3 applications and a wrapper for the API, I am beginning to run out of ideas for things to create. So here is where you come in...
If you can come up with a good idea for an app (and I think it's a good idea), I'll see what I can do to create it.
It could be OS-specific, cross-platform, or target mobile devices. (How many people use webOS, by the way?)
Note: I don't have a Mac, so no Mac-exclusive ideas.