alt Hacker NewsI'd highly recommend the iClever BK05S. It's the same size as a normal laptop keyboard, so your fingers don't need to feel cramped. It lays flat and stable, it types well, it pairs easily, it charges with USB-C, and you can use it as a wired USB-C keyboard in a pinch.
Only problem is where to get it. Unavailable everywhere, spoke to the manufacturer on alibaba and they told me its EOL:( And if it breaks they probably won't repair it anyway.
It's a derivation of an old Kickstarter project: Jorno keyboard