Dictionaries - Use Cases

I've looked over previous posts about Dictionaries, the most substantive being pretty old now. I was wondering if anyone has developed any particularly useful, erm, uses for them in the past year? This may be a case of 'if you can't think of how to use it, you don't need to use it' but I'm always interested in hearing the things you all come up with. Thanks!

I have a macro that emails out reports to various colleagues. I have a dictionary that stores email addresses with the person's name as the key. It means that I can grab the appropriate person's name and then the macro sends the email without me needing to code addresses into the macro. I don't really know if it's the best way of doing it, but it's 'a way of doing it'...

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Could you share that macro, please?