PICO USB Host for HID (kbd input)

[Gavin-Perry]

I would like to use a keypad (mini 18 key keyboard) as input to a PICO program as an easy way to enter commands.
I assume that this would use TinyUSB, but there are no examples for PICO and lots of caveats about using Host mode from AdaFruit.
I've found this https://www.arduino.cc/reference/en/libraries/usbhost/ but it is only for the DUE. Implementing the same as was done for Due for Pico shouldn't be too hard but it's more than I can handle.
Any help or pointer to examples much appreciated.