Graduation project: ideas for a web application

Hello,
I apologize for posting this topic in here but I just need ideas from more experienced developers, we are a group of 5 students in computer science department and we are required to make a graduation project for a 1 year perioed, we have an average experience in J2EE, JSP, struts and JSF and J2SE and we are required to make the project as a web application but we just couldn't find any new or interesting ideas all the web application are either blogs, emai/webmai, Content Management systems, Customer relationship management, ... but we are looking for a new ideas, we've been googling for more than a month now and we've already checked alot of posts in this forum for ideas. we just want to know what services people need from the internet that could be made as a web application. Thank you very much

Rather than looking for a cool "theme" can you give some ideas of what you need to showcase in this application?
Is it just a basic web application - ie slap a few data entry screens together into a screenflow, and do some calculations at the end
Do you need to demonstrate knowledge of the technologies you mentioned (J2EE, JSP, struts, JSF...)
Do you need to push the limits of the web interface?
Do you need to "break new ground"
Ajax is a useful thing to investigate and push the boundaries with.
Or take a web application and make it multi platform - ie access it with a browser, via a mobile phone - see what you need to do to accomplish that.
The only other idea would be to do some sort of game/simulation.
Multi user obviously.
eg a stockmarket sim, where you can log on to buy/sell shares. You also hook up your app to some XML feeds where it picks up the daily changes so you don't have to enter them manually.
Will demonstrate both user interface, and back end functionality.
Good luck,
evnafets

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