How can you leave that 'in a McDonalds for days'? I bet it would be nicked within the hour (by someone thinking it's just a charger).
https://www.yumpu.com/en/document/view/29557041/aruba-ap65wb...
They did it as a 2-gang but you could surely do smaller.
To consumers, it should look like this: https://www.homedepot.ca/product/leviton-1-gang-midway-nylon...
https://www.amazon.com/Single-SnapPower-SwitchLight-Built-Am...
do you think enough people are opportunistically malicious to form a reliable mesh network of jerks?