Fulenn, my dh and I love oatmeal smoothies and enjoy them often, especially in the summer. I use whatever "milk" with what ever fruit we have on hand, with vanilla and 1 full cup of rolled oats. It is so yummy, isn't it!
I also add hemp or rice protein powder when we're in heavy training for marathons. It makes a big difference in our recovery from long runs (10-22 miles).
We also add baby spinach or romaine when we have it.
These are a great portable way to get your oats for sure!