That is awesome. Believe it or not, I have rescued 2 little frogs, the size of a quarter from my indoor grow over the years.... How they got in, no freaking clue. But I saw a fuzzball hop out of the corner and I did a double take. Frog with some hair stuck to it. Safely brought him outside to be with friends.
There is another one in my other room in my barn a bit bigger than this one, but he hides and I don't always see him. No idea how they got in but figured if they wanted to go they'd just go the way they came. If I were in soil instead of pro mix I would name him happy lol