Keychains

Keychains are items whose only purpose is to be displayed next to Ai Phone as if they were hanging from it. Captains can choose a single keychain of their liking from the menu or get a random one each time they open the Ai Phone.
Keychains can be acquired from events and campaigns. On the Chinese server, multiple keychains come from merch bonuses. Some keychains can be previewed in-game even though they are not supposed to be available. 
The following list includes all keychains found, even if they can't be realistically acquired:
Category:Honkai Impact 3 Wiki