Memorial tattoo idea help?

I wanted to get a memorial tattoo for my grandfather who died close to two years ago, he was a father figure to me after my dad died when I was an infant. He battled with alcoholism for most of his life, but over came his addiction. He also had a strong will, we were told many times by doctors for what seems like every time he went to the hospital, he wouldnt be able to make it and he always did. He was a big time family man and even though he acted tough on the outside he was a genuine nice guy. He was always there for me growing up whenever I needed someone. Anyway, anyone know any ideas.