I started my research with the CheerTok Air.
tl;dr - Basic functions work, but not all buttons do. Super tiny and portable makes it a good choice.
What I like:
- Very tiny, fits in one hand so you can use it without a desk or table
- Is also compatible with iPhone and iPad, so you can use it for multiple devices
- Controls the Mac cursor in Mac Virtual Display
- Home button works
What I dislike:
- Not all buttons work, e.g. the camera button is non-functional
I continue to test the CheerTok Air and will expand this article as necessary.