Google is offering a free Google Nest Mini for anyone with a Google Fi account through the end of the month (or while supplies last, limit one per account). Log into your Fi account online or through the app and it should display on a banner near the top of the screen. For some reason the discount didn’t apply properly when I tried using the link in a web browser, but it worked when I used the link from the app. As of the time of this post they only have Charcoal and Chalk colors left.
Just got mine!