Posted 21 November 2012 - 22:36
Take note of what you do on your PC in real life, and fill any voids whenever you think "damn, I wish there was a program to do it for me". My first project was a settings editor for Rainbow Six: Rogue Spear. I loved the game, but changing settings could be a pain because you joined a multiplayer game from outside the game, and then went straight into the first round without being able to change settings until the game began. So I wrote a little application that read some registry settings, and allowed you to change values as desired before launching the game. Later versions allowed me to have profiles, where I could change the settings based on the map I was going to play.
Same thing for the XFire gaming messenger, except my application was able to change settings unavailable through the settings dialog. That one never really saw the light of day, but you get the idea.
If you're looking for something to task the theory (I assume) you've been taught in class, something like a Tetris clone or Pong would be fairly do-able for a beginner. It'd help you apply your skills to basic drawing, loops, classes, that kind of thing.
Just don't go too big. No Anti-virus, no web browsers, anything like that. You'll bite off more than you can chew and get bored, guaranteed.