My uncle brought snacks (cookies, cheese curds, brownies) to my grandma's viewing last year. He's a large man, so that's part of it, but also because my grandma was the kind of person who made sure there were ALWAYS snacks.  Frankly, after how my bitch aunt acted to my sister and I, grabbing a cookie in another room away from her was a welcome distraction from the awkwardness of the day.