Ask HN: What should I make?

I have to pick a project to make for my special projects class (i'm taking a CS course at a small technical school for an associates degree in business application programming), so I thought I'd take suggestions from HN because why not?

The requirements are:

- has to be written in Visual Studio so obviously it'll be a Windows app.

- written in C# or VB (i'm already picking C#)

- Have to write a .dll to manage a database connection (the database can be either local or online)

- Have to include at least 3 Crystal Reports, including a graph. This one annoys me because I hated Crystal Reports since the moment I laid eyes on it but what can you do?

I can handle all of these specs without a problem but I thought maybe someone had an idea as to what kind of an app to make, because I can't come up with any interesting ideas. Whatever I do make I'll post with the source code as a Show HN for criticism and/or truckloads of money.