* She did voice-over work for a commercial for "Snickers"** in 2015. The ad featured a funny scene where people mistake her for a male character from the show "How I Met Your Mother."
* She appeared in a 2016 commercial for "Olay"**, showcasing their new Regenerist Whip moisturizer.
* She was a part of a "Samsung"** commercial series in 2018, promoting their "Galaxy Note 9".
It's worth noting that she might have done other commercial work that hasn't been widely known. However, the above are the most notable commercial appearances of Cobie Smulders.