This is what I take, and show, at Buriram IO every year. Have been doing it this way for about 10 years, or more.
TM7 with 2 photo's attached. Selfies not accepted.
Marriage Cert original
Children's birth Certs & ID card copies
Blue and yellow Books.
Wife's ID Card
Bank letter on day of IO visit.
Hand drawn map to house.
Photo's of family inside and outside of house
Copy of KR2
My passport
TM30