My chickens have been so bored lately, with rain and snow keeping them "cooped" up. And it gets dark so early that many days there's no time to let them out of the run for a little while before dark. So yesterday, we bought 25 feeder goldfish, put them in 2 inches of water in a large sturdy food dish, and called over the chickens. We hand fed them a couple to make sure they got the idea, but they were busy and occupied for the rest of the day! They got 'em all!