If you like crazy input devices....
https://www.charachorder.com/en-sg
How about a corded input device!
But if you think it's too clunky on the desk, why not a handheld version?
https://www.tekgear.com/twiddler3.html
I've actually used the twiddler 3, it's great, it is a big learning curve
The big difference between the devices, other than the form factor, is the first One is about having corded word input, and the second one is about having corded letter input