Single Serve Oat Milk for steamed drinks [$10]

95% of the time, I make non-milk drinks but I like to make 1-2 oat milk drinks per month. I hate wasting oat milk, but the Oatly Barista is only sold in big 1 liter containers. Is there any oat milk that comes in small servings that steams well?

It looks like Oatly sells 11oz cartons, but I’m not sure how well the original recipe steams compared to the barista edition.