I got the Silly Goose on my first spin, but he will stay in storage. That is one creepy-looking Goose. Plus, I worry about the space/housing issues that will eventually occur as I level up. I want to make sure I always have room for all the animals I love and actually want. Because of that, many prize animals will probably never leave my storage bin.
My other spins have been coins and 2 of the Faberge-ish eggs.