The rest of the floormats I ordered finally came in! We got 80 square feet of 3/8 inch gray floor mats from EZGoodDeals.com. It was by far the most affordable place to get them. Installation was a snap (HA! Get it? Snap? Cuz they snap together...). Anywho, it adds that necessary face plant padding to the floor in Robert's room.
He's been sitting up a lot more lately, but when he's over it, he just tosses his body backwards. I don't think anything is going to absorb that kind of hit, so I still just sit behind him so he can fall into me.
As he's doing tummy time, though, I no longer have to worry about him getting tired and dropping his face into the floor. The mats provide a sufficient cushion for the 3 inch face plant.
Here's how his room looks now:
