One of my big ones is full button up pjs. I can take the three buttons on the bottom of a onesie, no big deal there. Same with full zippers, I love those! So easy. But the complete button up all the way baby pjs annoy the crap outta me. Haha. Sure they're cute, but when I have to unbutton and botton a bazillion (maybe not that many) times a day, it's annoying.