Essential consumer goods have huge markets, and have few differentiating factors. Both of these things are beneficial for mass production, which lowers the cost so much that small business are driven out of the market. And the small business that remain often only resell mass produced goods. Even though WE want essential goods available for Monero, I think it offers buisiness too little advantage in a highly competitive market and the effort required plus legal uncertainty may even drag them down.
If you want Monero adoption, ask yourself: Why would you want to receive XMR instead of cold hard cash for your work and/or goods? The obvious answer should be: Because you can use it for things you can not use cash for! Yeah people of course thing "duh we got the darkweb" and while that's true the market is way beyond early adopter stage and does not really require our attention. I do like to market for internet services (email, vpn, vps, sms verification etc) because it's such an obvious yet still niche use case. It's also a low value way to spend donated money on your foss projects or whatever you do.
Personally I think good markets would be anything that is not illegal, but people still don't want anyone else to know about. If you could pay for tax consultants, lawyers, psychiatrists and similar professions anonymously, I'd bet some people would be willing to pay extra and go out of their way to acquire XMR. And once you can't trade for fiat anymore, the best way to get some would be to earn by offering more generic things.
Yes, in the end it's a hen and egg problem. But I really do believe the least uphill battle is going the "exclusive for XMR" route.
The minimum security deposit is small enough to not be a problem in most cases. If you give away anything of value online, put a public donation address alongside it. If you don't you can join #getyourfirstxmr:monero.social and offer a low value deal in exchange for eg. gift cards.