Just had this one sent my way… fairly apt

Not even if it’s windy?

Caution, this sign used to have sharp edges

A few from down under:

😯

I’d have to add a full stop to Trees Don’t Move.

Is that one in the OP a warning to users of the slope or an instruction to the flora, though?

I suspect this isn’t in the right place, but if it were, that would be a useful sign:

Some great signs, I particularly like wwaswas’s ‘tiny grass is dreaming’ sign, that’s just lovely! And bizarre. 😀