L.D.
I ordered my Dad a personalized Father's Day card and included some of my favorite childhood pics with Dad (cost less than $5) - I did the same for my Mom and Grandma for Mother's Day and it was a big hit!!
I also scanned some old and recent photos of dad and created a photobook. I've posted all my "thoughtful" father's day ideas and recommendations here: http://www.skinnyscoop.com/list/L./grown-up-fathers-day-g...