Examine the keychain

Apart from the enormous flashing wailing keychain, you have the following on your car keys:

A key to the hatch of a T-74 tank

A key to a Dodge Viper V8

A dark, twisted mass hewn from the earth in a ceremony that permanantly scarred our world that opens your garage door.

The key to a can of sardines that you returned to the ocean with great ceremony one midsummer's eve.

Five different house keys, none of them yours.

The Ultima Key.

Unconfirmed