[Xav]

If you're limited to console applications, here's a few to start you off that work using a command line interface:

1. Prime Number Generator (user types in lower and upper numbers, and program calculates prime numbers between it)

2. RSS Headline (gets latest headline from an RSS feed and displays title, description and link)

3. Password Generator (generates memorable passwords from key words, of a set length - could also store them for an extra challenge...)

Try these out for size - presumably you're using the .NET Framework, and I've accomplished all of these using them, but if you need any help or anything, just ask!

Xav