

I got these: Moko foldable and Plugable bluetooth. I highly recommend the second one because 1. Normal layout and 2. It works with usb cable, so you can unlock LUKS or get into bios if you need to. The moko feels better to type on but you have to deal with the layout (just give it time) and it only works via bluetooth (usb is charge only), so no LUKS prompt/bios AFAIK.
Practice.