Birth certificate of our child born last year, deeds of trust for both of our houses in our names, car titles in both of our names, health insurance, life insurance policies (stating each other as beneficiary), car insurance, bank statements since the time we got married, airplane tickets with same flight and seats next to each other, water and electric bills + internet, Joint tax return from last two (three) years, signed affidavits of support - one is our friend from Air Force (my husband is DOD now but still works on base) and another affidavit is his cousin who was the witness at our wedding. Pictures since the time we got married. Our rental lease agreement when we moved to TX for a year in 2019. Pest control bill on both our names. Military card for national parks having both our names/signatures. Just pretty much anything you can find that.