There are a few little toy projects at dev that I like to parade around. Check them out! You might like them:

• InfoWidgets are sort of a Swiss Army Knife. You can use them to add little boxes to your pages that show you all kinds of live - continously updating - info about your wiki. The presets are: Recent Changes, New Pages, Article Stubs, Missing Pages, Contributions, Watchlist and Active Talk Pages. The concept is quite flexible so new InfoWidgets could be added: a list of uncategorized pages e.g. or a list of missing images... Pretty much any view the Special pages offer can be added to a little window you can put anywhere.
• Sine is a little gadget that automatically adds your signature to your forum and talk page posts. You'll find this quite useful if you're as forgetful as I am.