I have friends who use almond milk in fruit shakes.
I often use ½ milk, ¼ almond milk, ¼ water when I eat cereal. I prefer the taste of straight milk (I usually use skim) but I try to keep my dairy intake down. The sweeter the cereal the less I miss the cow’s milk.
My sister is vegan so she uses milk alternatives in recipes, but I don’t think she uses a lot of “milk” anyway, so I don’t know a specific example to give you. Whenever I spend time with her I’ve only noticed her use “milk” with cereal, and she doesn’t eat cereal a lot.
I’m pretty sure Babycakes’ frosting recipe is made with soy milk. Babycakes has some of the best dairy free dessert recipes by far.