Greetings. I'll spare you the reasons but i must hide a key on the exterior of a 2003. The answer in this case is not about FOBs or remote entry or key codes or alarms. I must hide the ignition/door key the old fashioned way. Historically one might have used a small metal key box attached somewhere with a magnet. However virtualy no accessible metal surface on the vehicle. Want it to be a method such that many years from now it will still reliably be in place. Thank you for your suggestions.