So we decided that the Planet X pin will be blind. Unseen until you discover it in your shipment. Just like the REAL Planet X (if it is real that is). Currently Planet X is only available to Full Set backers and is added as a free bonus pin. 

The pin is already designed — but, it was designed by my daughter (age 11) who also created this pin series last year:

I promise there will be no poop involved on Planet X Cat. She was eight when she originally designed those and has outgrown that phase. 💩🐱