You can do whatever you want. I was just giving an example.
There are tons of Hidden Mickey Series Pins out there.
For Example heres the Mystery Pouch of the Silhouette pins. Two come in a pouch, but the whole set is pictured.
http://www.pinpics.com/cgi-bin/pin.c...740.1212515997
There is also this set:
http://www.pinpics.com/cgi-bin/pin.c...740.1212515997