Here's a quick, but interesting one - Twitter has announced that users are now able to add emoji to their Twitter name and bio fields.
Now, if you want to do something like this on your Twitter profile:
There's also this:
Or even this:
There have been Twitter text editing tools available for some time, including one called Bedazzle which enables you to change the fonts and text options available within tweets.
But these are hacks that don't quite ever seem to work as they should. Twitter has now embraced the wider emoji trend and given users the ability to use emoji in their personal descriptions. If you're into that sort of thing.