Decaflon

I'm about to start playing with Flex to see if it is useful enough for me to invest the time to really catch up with the Flash scene again. I tend to avoid it for several reasons, but as Flex is essentially letting you use some of the good features of flash without necessarily dealing with the headache that is the flash development environment, I figure it's worth another look.

So what I'm looking for are ideas to make a nifty little flex app. We had a thread earlier on where we shared clever domain name ideas, and I'd like to take this note down a similar path.

What I've thought of so far:

• Explore my music library: Essentially export an XML from itunes and then hook into various web services to show album art, info, maybe preview tune or hook into last.fm, etc.
• Photo gallery: It's been done ad nauseam, but it's still a good little intro app to build.
• Friendfeed redux: some sort of clever little interface around the multitude of social sites that provide rss or xml of your profile.
• Stat visualizer: Pick some interesting service and do some analytics for it.

What do you all have? What kind of RIA would you like to see, or use?