zipper charm and keyring, skull keyring and charm, keychain and charm,

A set of two keychain or two charm.

The skull on the keychain/charm is made from resin. The spiral are also made from resin.
Red and blue skull

These charm/keychain could be great as friendship bound, one for you and one for your friend.

There are so many occasion that you could use this as a gift, for your teacher, one for him/her and one for you.

Also why not keep them both, and use one for your keys and one for your bag