As parents, we are really big on our baby's "first"s. First tooth, first step, first Christmas, etc. And while these things are important, they're also kind of boring. Most "first"s are things all kids have in common.I started thinking about it the other morning, when my son was being a bit fussy getting ready for school, and I grabbed the first thing at hand: a sheet of bubblewrap from a recent postage delivery. As I showed him how to pop it, and watched his face light up with giggles, it occurred to me that he had never played with bubblewrap. This was a first. Sure, it's probably not as big a deal as a first haircut, or anything like that, but it made his morning. After all, what kid doesn't like bubblewrap? (Of course, true to his habit of renaming everything, he calls it "squeezy-pop".)