Item Crates
Item Crates are a pickup that gives items. The basic crate needs Buffs 
Mastery level 5, the Upgraded Crate level 10 and the 
Golden Crate level 15.
Pet XP
Collecting pickups in any world gives XP to your equipped pets.
Pickups
System
Pickups are objects that spawn in most zones and give currency and items when collected. They respawn after 7.5 seconds by default.