There is a little more than a week left in the campaign and 16 of the pins have now been unlocked, as well as the incense burner cat pin.   This pin shows up as an item for all pledge levels of 10 or more pins.  This means there are just 2 more pairs left to unlock, the feathered friends and the fools, followed by the rainbow chameleon.   If the final chameleon pin is unlocked it will be added to the 20 pin pledges in addition to the incense cat pin.