You might just look around for various COM modules.
When you see various features existing COM modules have, you can probably think up a use for them.
When in doubt: press a button.
For instance, a COM module with a dictionary spell-checker. Perhaps a thesaurus?
You could take a user inputted sentance, spell-check it, then use the thesaurus to turn it into variations of that sentance.
In other words, find feature and you'll find a use.