> You don’t get adult toys in your local grocery store

In the US at least the classier vibrators have been starting to be sold first at shops like Sharper Image, and now, indeed, grocery stores. The packaging of course would not raise any questions from kids, and they are sold in the same aisles as condoms and lubricant. "Sexual health" is the umbrella term which feels like it is in play.

There is also a thriving wink-and-nod category of “personal massager” tools which are sold in many department stores in the US. They’re usually not in supermarkets, but I get the impression that’s mostly due to supermarkets not having many electronics/appliances in general, not because supermarkets are more family-friendly than, say, Target.