It is difficult to eat with both arms hooked up to an IV: with the double whammy of a drip on both left and right, you need something portable, tidy, and absolutely full of nutrients. When eating is tricky, every mouthful has to absolutely count. (And, if you aren’t really eating, because you are so tired and stressed that everything tastes of ash- which is a true thing that happens, by the way- the same applies.)
So I found these bars. And they were (almost) perfect.