If you're looking to see all the gifts and spins that your friends have sent you in the casino, you can easily do so by visiting the Gift Center.

To access it, simply click on the Gift box icon located in the top left corner next to the Home button.

Once you're there, you can click on "Collect" for each item to claim your gift. Just keep in mind that there is a limit to the number of free coins and spins you can accept each day.