I haven’t seen this posted, and it’s been running for a while now.
Get a free Google Home Mini with purchase of any Nest product $99 and up.
https://www.lowes.com/search?searchTerm=nest
https://www.bestbuy.com/site/promo/nest-google-home-mini-offer
https://www.homedepot.com/b/Nest/N-5yc1vZc5f
Check your favorite retailer.
Most of these deals are valid through 2017.12.31.