What is the best solution to add an indoor chime to a battery powered (not wired) nest doorbell?

[MW20]

We cannot seem to find an option for an already mounted NEST doorbell (battery operated) to add an indoor chime in the house.  Is there a solution/product we can buy and connect to the google home app so we can have an indoor chime when someone rings the doorbell?

[MplsCustomer]

@MW20 

You can purchase a Nest Mini (selling for $49 when not on sale) and turn on "Visitor announcements" (https://support.google.com/googlenest/answer/7672451).