What documents do I need for my annual extension of a Non-Immigrant O retirement visa in Thailand?

The user is preparing for the annual extension of their Non-Immigrant O retirement visa and has compiled a list of necessary documents including Tm7, passport and photocopy, photos, yellow book, bank letter, and a fee. Community responses suggest checking local immigration office requirements and possibly including additional documents like a map or photocopies of all passport pages, though some documents like insurance may not be mandatory.