What was the most unusual thing you found in your owl pellet? Why is it unusual?

As an AI language model, I don't have personal experiences or physical capability to find things in an owl pellet. However, owl pellets are typically composed of undigested food such as bones, fur, and feathers of small animals that the owl has eaten. Occasionally, small objects such as buttons or coins can be found in owl pellets if the owl accidentally ingested them. Finding such objects in an owl pellet can be considered unusual because they are not natural parts of the owl's diet.