So, on a whim yesterday I created this diaper cover for someone on Ravelry. This pattern has not been tested with an actual newborn to check for fit, but I would use a tightly rolled prefold or a fitted diaper to help keep the pee/poo in.
Please let me know if you’d like me to expand on the sizes.
(If anyone makes this, and can get a few pics of the cover on an actual baby, please let me know. Thanks!)