The following post is brought to you by Nest. Our partners are hand-picked by the Design Milk team because they represent the best in design.

For the past two weeks, I’ve been pinning pictures of happy houses, smiley-faced chairs, and other delightful images on Nest’s Happy Homes Pinterest board in celebration of their adorable new video:

If you don’t know about Nest – now’s the time to learn! Nest is a smart thermostat that learns what your habits are. Apparently we change the temperature in our homes 1500 times a year – wouldn’t it be nice if our house just knew what temperature made us most comfortable? That’s what Nest does.

I’m giving one of these awesome Nest thermostats to one lucky US-based reader. Here’s what you have to do:
Option A: Pin a happy home or smiley image to Pinterest and put the URL to your pin in the comments on this post.
Option B: If you don’t have a Pinterest account, in the comments on this post, share the URL of an image of a happy home or a happy interior/product that makes you smile.

You can find an image online to share, or, create your own happy homes face and upload it to Facebook, Instagram or anywhere on the web! Just share it with us.

But hurry! This giveaway ends TOMORROW at 5 PM ET.

Rules: One entry per person. Open to US residents only. Contest runs from July 23, 2012 at 8:30 AM ET through 5 PM ET on July 24, 2012. We will choose a winner at random. The winner will be contacted by July 25th and we will update this post with the winner’s name.

Sorry, this giveaway has expired. Congratulations to Allison, our lucky Nest winner!