Recently had a son that was a bit preemie. He was drinking very small amounts but very frequently while he was bulking up. I didn’t want to invest in anything too expensive considering they would only be used for a month or two. I ended up buying these bottles to use and have since handed them down into my brew gear for slurry storage. They are graduated to the ml and half ounce.
They are safe for steam sterilization (if that’s your thing) and don’t have the breakage potential of glass containers. The bottles we got in the hospital were in sterile bags, so they might be fine in an autoclave as well.
Medela Breastmilk Freezing & Storage Containers, 2.7 Ounce, 12 Count Amazon.com