Can we make the ultimate Fluther code thread?

Every now and then, in threads here on Fluther, there are Jellies that use these cool code thingies.
Writing upside down, backwards, different fonts, hard spaces, copywright signs, etc.
Sometimes I remember one, usually I don’t.
Plus, I can’t find them on Fluther when I want to use one of them…, I mean, where to search for them?
If I would find them, it wouldn’t be useful, since they’re written in code in the box the code doesn’t show up in the thread.
So, if you know one, would you like to put it here?
I’ll bookmark the question for future use.
Thanks in advance!