Among other items, I have knitted a stack of baby hats for the local hospital's NICU.
Twenty-eight hats in various pastel colors.
People hand off a large number of skeins to me (and to the spinners/weavers guild) because they either have leftovers from a project or they changed their minds about knitting something.
The NICU isn't particular. They simply want to keep the babies warm. So I knit hats at night while we are watching NCIS or an old movie or Sherlock. I don't need to look at my fingers or the needles. I just knit by feel.
If you have lightweight soft acrylic yarn sitting unused in your stash, check with your local hospital or knitting groups and donate for making hats to keep babies' teeny tiny heads warm.