Assignment Ideas

Hi,
I was wondering if any of you could kindly give me some ideas on what to do for my 2nd year project.
Apparently, if we have some ideas we can write it up, as long as it is impressive. Or we would have to do what he sets out.
I don't want to have to do another game programming :O

How hard is it to write apps for Iphone/Ipod or the new Windows Phone 7?

would it be terribly hard to learn in just a few weeks?

It appears I would prefer to write apps than games..but I have no app ideas..so can you kindly suggest something?
Thanks.

Maybe you could do one of those visualization things that let's you "see" music, along with a generic mp3 player or something. And rock out to ELO when you need to test it.

That sounds cool whiteflags...
how would I go about doing that? Is it possible to do with C++?