We recently noticed that the polywogs have hatched in the local creek. So we trudged down there today with some buckets and captured a few of them.
It turns out that the old aquarium that we used to raise polywogs in years ago seems to have survived the house project. It is cracked, but fairly intact, so we put a rock in it and some pond water and the polywogs. You can see some of them in the closeup below.
Pretty cool. I will see if I can get some photos of them after they frog. Polywogs keep you young.