Baby and Hardwood Floor
I was very worried about this when I was pregnant--I have a hardwood floor and my area rug lacked padding. I invested in a foam play mat, specifically this one. It became a constant source of fun for my daughter once she was able to sit up, as she liked to tear it apart. It also kept her from slamming her beautiful little head when she lost her balance. We used it for about seven months straight, but I would recommend it to anyone with this worry.