As stated in the requirements, they need original and photocopy of each document. It was actually pointless copying greeting cards, tickets and pictures as they would know it's genuine once they see them (isnt it? lol) they would only be just additions to the loads of papers needed to be submitted. So my husband emailed them and asked just to be sure. and they advised us to submit a copy of each coz that's what was stated with the "requirements" (I applied for a Spouse Visa back then) and advised all originals will surely be returned. As far as I can remember, I think they returned to me both copies and originals of all of what we'd submitted except from the copies of important documents like (Marriage Contract, Birth Cert. my husband's papers etc.) and important forms.