IPod plugin adapter missing

[Jenn-A]

Alrighty then. I just bought a new-to-me 2012 Yaris Sedan that has a plugin for my iPod. The only thing is ... there is no adapter for the plugin! It didn't come with my car, I already checked my glove box and all the little places it could hide. No luck. Went to Best Buy. Nada. I even went to the local Toyota dealership to see if they could help me. Nope. The tech even called Toyota & said that it wasn't a serviceable part??? O_o Which doesn't make any sense.
However I did take a picture of the iPod plugin in my console.
So, maybe someone out there in Toyota Land knows what the adapter is called in car lingo and maybe, just maybe, has a part number for the adapter.
Any help would be greatly appreciated.
Thank you!