The list author says: "Baby Gear on this list are items that you can get a lot of mileage out of! Each item also has developmental benefits as discussed in my parenting on-line guide, stellarcaterpillar.com"
"A play pen is essential! Baby has her own space where she feels safe and secure to explore, nap, and play. Use this instead of a jumper or exersaucer to free your hands and encourage motor skill development."
"Babies and toddlers love the squeaky sound this toy makes. It is made of natural rubber with vegetable dyes, so it makes the "green" list. Plus, it is excellent for fine motor skill development of the fingers."