Worms, of course. And, the boys found a lot of them.
To make sure they had a “cozy” place to stay, they made a worm house out of an old plastic bowl and–you guessed it–mud.
Lucas threw in some more water for them to “drink”, but I think I managed to rescue all of them before they drowned.
Unfortunately, a few were lost down the outdoor sink when I caught Lucas giving them a bath under running water. My only hope is that the rest crawled out and made it to safety.