Ideas for my dad's 60th birthday?

Our family isn't so much into presents as we are experiences, and so me and my two brothers are trying to think of ways that we can make his 60th birthday special. He loves sports, loves his granddaughters (4 of them), loves family time, but most everything we can think of we've either done before for past birthdays or are not as "memorable" as we want for his 60th. It's still over a month out so we have some time, but I was just looking for any unique or extra special birthday ideas we could do. Thanks