Hello. I am applying for DTV in Los Angeles and it asks for a proof that I am currently in the country I am residing. However, I live at a family member's house right now so my name is not on a lease. I am already submitting bank statements so it seems redundant to try and use that as a proof of my location. I have a driver's license from California but it feels like that is not much proof.

It gives examples of visa, proof of payment of airline tickets, and accommodation. Would it be valid to show my most recent airline ticket into the USA a few months ago? Any other ideas of a document that would be worthwhile to prove I am in the USA?