Submitted by Mama Kalila. Thanks, Mama!
"We're planning to start out w/ prefolds on our next baby... but a little unclear on how to do the belly button thing. Is there a type of diaper or cover or fold that works best for that or any other advice? Thanks!"
As far as a prefold during the umbilical stump phase, most folds can be modified to fit underneath the cord. You can use a jelly roll fold, and just fold it down a little in the back first to shorten the prefold, so it fits right under the belly button in the front. This is probably my favorite newborn fold because it really holds in that explosive newborn poop. But even the newspaper or bikini twist can be customized this way. So pretty much any fold you an find is fair game, you'll just need to fold down the prefold in the front or back a little to make the rise shorter.
As far as covers, Thirsties XS Diaper Covers are my very favorites. They are fairly roomy, so an XS will last a long time... no growing out of them after two weeks! LOL. They also have a little dip in the front that fits nicely under the umbilical area. Bummis Super Whisper Wraps are great for this reason, too, although they run a little smaller so my Ruby outgrew them pretty quickly.