This is a cute idea. :) anniversary surprise - surprise boyfriend with 12 balloons in front of his door or in his bedroom. each balloon should have a photo hanging from it. on the back, write a favorite memory of him related to each photo.
Happy birthday hubby: birthday balloons tied to the staircase. Attached to each balloon a reason why you are glad he was born that day. On reason you can place an envelope with couple oriented coupons inside (breakfast in bed, sexy time, backrubs, etc).
Valentine's Day Gift :take screenshots of the extra sweet messages for about two years, print them out and glue them onto 52 playing cards and aptly named the cover: 52 Screenshots of Our Silly, Sweet and Sincere Conversations from the Past Two Years :)