Here’s an interesting collection of wacky (presumably unintentionally so) signage, instructions, and warnings. It’s The Hall of Technical Documentation Weirdness.
This sort of reminds me of National Lampoon’s True Facts, although in these days of the internet there seems to be a lot more phony stuff out there.
And speaking of phony stuff, you can create your own church sign. Some of the links on this page are cool, too– check out the license plate maker and the candy heart maker.