After a suggestion from @abacab, I have created a little Twitter trivia bot. This bot posts a random fact from RandomFacts.org to its Twitter account every hour. There are some really interesting things coming through on it, so if you like trivia, give @triviabot a follow. I will be adding more features soon, such as being able to ask it questions and to play simple trivia games, but I have to work out the details first.
If anyone has any other suggestions for bots or other Twitter scripts (or anything for that matter), feel free to drop a comment.