For quite a while I got in the habit of making almond milk and using it for overnight oats before early classes. It requires a couple of things that one might not have on hand like a nut milk bag for straining (and a powerful blender), but otherwise it's easy and delicious, better than store bought in my opinion. It doesn't last as long without preservatives, but I recommend it to your readers who want to try. "Recipes" abound: Love & Lemons has a good one. https://www.loveandlemons.com/how-to-make-almond-milk/