If you're in to games, you might want to try making Lingo, someone posted a problem they had in class about making the game and it looked fun enough that I might even try it (though I'm quite partial to the game).
If you are looking to do something more mathematical, what about a triangle solver? The user enters three sides, two sides and an angle, or two angles and a side and it outputs the solution.
Perhaps math isn't your fancy though: what about a script that finds files older than x number of days in a specified folder and deletes them, that way you could have an automatically emptying temporary folder on your computer? Kind of handy if you have things you know you probably won't need again (like print jobs that you might find a mistake in but don't want to keep the original file around forever).
On that note, you could make a script that automatically backs up your Firefox bookmarks.
Maybe you could build an implementation of ELIZA .
Welcome to Daniweb!
- Joe