OK, I've found a wifi web browsing device with no cameras, microphones, or speakers, but it's not worth mentioning because it uses plastic casing, which I didn't realize until now is going to be a major problem in the search process.

This is sort of like how I can't start a business selling walkie talkies because I've never seen an affordable one without exterior plastic.

I need help finding a way to get safer electronics on the market.