Gall #2 is a fancy cup-shaped one found on the undersides of leaves, sometimes in clusters.
A month after I collected them, the galls (kept in a tightly sealed vial) had become covered with mold, but a single wasp chewed its way out of one of them. It was dusty and acting a little drunk when I found it.
To my eye, the host plant looks to be the same oak on which I found gall #1. This time I remembered to get a shot of the buds as well as the leaves.