Aside from being simply adorable, BabyLegs are a great way to protect your child’s tender knees while crawling. But that’s not all they’re good for: These “leg warmers” (think Flashdance without the bulk—or tack) make diaper changes a breeze; they ride only as high as the thighs, so unlike pants, you don’t need to take them off, even for blowouts. They’re also lightweight and compact—perfect for throwing into a diaper bag. Baby’s cold? Pull them on. Too hot? Pull them off—no muss, no fuss. More than 100 styles available, many just for boys. $12–$28. Babylegs.com.