Lenovo offers an external version of their keyboard :)
https://www.lenovo.com/us/en/accessories-and-monitors/keyboa...
https://www.lenovo.com/us/en/accessories-and-monitors/keyboa...
The new Bluetooth version (model 4Y40X49493) is more versatile (though make sure you get the "Keyboard II" rather than the previous model).
https://www.lenovo.com/us/en/accessories-and-monitors/new-ar...
That's much more relaxing to use in my lap.
Are there any still-manufactured laptop-like keyboards that have either a built-in stick or trackpad, positioned like a laptop rather than off to the side, with mouse buttons and a palmrest?
My problem with it was that it wasn't as convenient as a good ergonomic keyboard.