You can place the key in an envelope and store it at Terminal 8 but it will be stored and charged as a small item $8 per 24 hours. You need to provide the name and contact number of the person picking it up. The person picking it up will have to present photo i.d. Item must be picked up within the days you pre-pay for storage or they will be liable for the balance upon pick up in order for item to be released.
Baggage Storage (Key)