Okay, prepare for genius: if you were using Avent bottles (the bottles have bisphenol-A but the nipples are silicone and apparently still fine to use), you can use a glass SMUCKERS JAM OR JELLY JAR as a baby bottle. I know, right??
It's the 10-ounce and 12-ounce glass jars that work, NOT the 18-ounce jars. Take out the jam (or KICK it out!), remove the label, wash the jar and lid (keep the lids), put baby formula in the jar, and put the Avent nipple/collar on the top! (My mom says that when you screw on the top, it'll kind of stop and then you need to give it another little turn---almost like you're locking it on.) OMG, glass baby bottle! Safe! Except for possible shards of glass if you drop it! But CHEMICALLY safe!
Now, my mother would like you to know that this was NOT tested on animals. No, we use only real human babies for our experiments. My mother obtained access to a baby who was accustomed to Avent baby bottles, and we arranged to secretly replace the baby's usual bottle with
For ounce markings, pour a measured amount of water into the jar and use a permanent marker to mark the outside of the jar at the water line. We haven't done any dishwasher testing, but in hand-washing experiments the marker was only just starting to wear off after two days' constant use (we had only one jam jar at the time). For those of you who do not enjoy math: 2 tablespoons is 1 ounce, 1/4 cup is 2 ounces, 1/2 cup is 4 ounces, 1 cup is 8 ounces. You could also fill a plastic baby bottle to each ounce marking, pour that water into the glass bottle, and mark it that way.
The jam sells for, like, $2 per jar, so this is economical, too! Dishwasher safe! BPA-free! Pure, all-natural, organically-grown glass! Reduces worrying by 95%!
Now, what are you going to do with all that JAM? Empty it into plastic containers, probably. Also, the Smucker's site has recipes! Jam meatloaf with jammed potatoes tonight, dear!
(And do I need to point out to you smart people that you should check with your pediatrician before implementing a new system? People haven't used glass jars in so long, who KNOWS what we should be aware of.)