Zero Touch Enrollment is a process where devices can be pre-provisioned to a domain. This allows a device to be shipped directly to a customer, and then once connected to the internet, will pick up all relevant policies immediately.
You can simply demo what these devices look like in their 'Pre-provisioned' state in the Admin console in the Org Unit called 'ZTE Pre-enrolled Devices'.
Update: If you'd like to generate your own pre-provisioned device, please get an enrollment token for your desired OU and enter it on this form. Within seconds a pre-provisioned Pixelbook will be available for you.