A new pin, the “Sun” pin, has been hidden on Club Penguin Rewritten until July 19th! If you don’t want the location to be spoiled, please skip this post! Here’s how the pin looks like.
With the help of icychaps8864, who I thank greatly, I was able to find the pin. It is located at the Dance Lounge inside the lamp by the bottom left!
Once you’ve collected it, you can wear it and it will be added to your stampbook. I hope that this guide helps, thank you for reading!