Oak puff ball

A pathetic last minute attempt to shoot something before dark settled in.
We were at the new house working in there to get things done before the big move tomorrow. I was sitting on the couch holding my little sweetie, when I saw this on the patio table. It looked pretty good an hour earlier! By the time I got to it the light was pretty dim.
I think it's some sort of fungus that grows on oak trees. When we were kids, we used to call them puff balls and would step on as many as we could to hear them pop!