On the first combat of each day with the stocking mimic without familiar equipment equipped, at the end of combat it will say "%familiar% reaches deep inside himself and pulls out a big bag of candy. Cool!" This message indicates that the familiar is now equipped with a bag of many confections. It would be nice if that were tracked with a property, because bag of many confections happens to be a "high" candy, and can be used to fill in gaps for Sweet Synthesis, especially in hardcore. There's not really a good way to tell whether the bag hasn't dropped yet, or it dropped and got used up by Sweet Synthesis.