1) Vulcano (it is on the map): offer items and you get 1 item back, there is a slight change you will get back something worthy! The higher the rarity the more change you have.
idea 2: offer one of your pets and see what might happen


2) Can there more pet avatars?
like 20+ for having more than 20 pets
"Big family" for having the maximum allowed amount of pets?
( just 2 examples of course )