Free Apostrophes with Covers and Cases at Mr Panini's

How do people end up making the wrong decisions about apostrophes? For which they'd write apostrophe's. 
It's as if they pick up a few just in case and then see six words that end in a single letter s so they just chuck the little hooky things at the words and hope they attach themselves in the right places.
It reminds me that close to my home there is a Post Office with a cafe attached. Painted onto the window they have listed what's on offer; sandwiches, rolls and the like. But we locals call it Mr Panini's because that's what it says on the window.
For those of you who don't know, panini is already a plural word in Italian so adding an apostrophe and a letter s must in this case indicate possession, hence this must be Mr Panini's cafe.
So where was I?
Ah yes, a shop at the bend of Pancras Rd offering radiator covers and book cases with free apostrophes shown in the top two pics. But if you want a radiator cabinet you will have to go without.
Just to the left/south of this shop (Feb2019) there is a temporary toilet cubicle where you can also get an apostrophe fix.
For those of you who still haven't a clue where an apostrophe is needed, it is /it's* reasonably simple – stick one in where a letter or letters is/are missing or where someone owns the item to show possession. Plurals, as in the pics shown here, do not need them. More clarification here.
*not to be confused with the possessive its which has no apostrophe as in "the cat licked its lips"
Coming soon...
Spot the odd one out:
would not have / wouldn't have / wouldn't've / wouldn't of