Sample documents showing off LibreOffice features

Hello,

I'd like to build up a collection of sample ODF documents that really
show off the versatility of LibreOffice. This could be complex Writer
documents, or spreadsheets doing awesome things, or smart-looking
presentations.

These would be useful for marketing (making screenshots and videos) and
showing potential users what the suite is capable of.

So I'm putting this call out for docs! If you have something you want to
share, and are happy for it to be public and Creative Commons BY-SA,
please email it to me. I'll then organise what I receive and set up a
wiki page for them.

Thanks!

Have you browsed through the templates, pulling interesting examples
from there?

Obviously, I'm biased, but _Inglenook and Timesaver Puzzle_
(https://extensions.libreoffice.org/templates/inglenook-and-timesaver-puzzle)
belongs in that set.

jonathon