League of Legends (LoL) Question: Should Funsies Built be included in a serious guide?

Do not include if they build isn't:

Optimal
You do not use it
You have no proof it works

If you think it's adds value to your guide, and if you clearly state that it isn't the conventional or most reasonable thing to do, then I think you should go for it.

For me personally it's something I enjoy seeing in guides, as long as it's clear to me that it's a bit silly. I think it would be best to put the description of such "funsies" in a separate chapter("Jungle Sona") rather than small mentions in every relevant chapter(runes & masteries, maxing order etc), to prevent confusion.

Feel free to make a funsies build in the cheat sheet, but make sure people know it's not 100% serious. If you want to put it in the guide, don't place a focus on it. Put it into an expand/spoiler tag, and again make it clear it's funsies.

You can - it'll just detract from the seriousness of your other build

I would include a optimal build/standard build along with the non-conventional one.