Hardwood
I believe Ezra likes to sit and crawl on hardwood floors more than rugs or carpets. I believe this because when Corralling Ezra he always crawls to the hardwood floor if there are no power cords to play with on the rug.
I don’t know if he likes the smooth surface of the hardwood floor. Or if he likes how the hardwood floor is easier to slide the knees over. Or maybe he likes the challenge of the slippery surface of the hardwood floor that probably makes the sliding of knees easier, but causes the balance and hold of hands and knees difficult because it has more slip than the rug? He does not fall more when on the hardwood floor, but when he falls he falls fast and hard. He always crawls back to it even when I put him on the rug after a fall. Maybe he likes the hard surface? Maybe he likes the fact the corral’s only moving door is a journey over the hardwood floor?
Ezra appears to like the hardwood in part because it is where we some times put our shoes and bags, which are other object Ezra likes to play with and try to put in his mouth. But now that we are Corralling Ezra in this area, the bags and shoes are usually moved to another location, and he sits on the hardwood floor and crawls on the hardwood floor and some times hits head the hardwood floor.