I surf and last time I did my mechanical key fell out of my "key pocket" on the wet-suit. What are my options as I have no mechanical keys left?
If I remember correctly, people have reported getting a little key plate (metal?) that has a number corresponding to the cut of the mechanical key. Providing this number and some proof of ownership of the vehicle to Toyota should get you a new expensive key. Once you get the key, take it to a locksmith and have cheap copies made before loosing them all again.