Great topic, David!
Like many, a lot of my bucket list items revolve around travel.
Travel to as many of the Presidential Libraries as possible
Travel to as many of the Major League ballparks as possible. See my Red Sox win another World Series (this year?)
My wife has taken up genealogy so we'd like to travel to places that were important in our ancestors' journeys through life. For example, the house my parents rented in Seattle during my dad's World War II assignment in Seattle, the Civil War battlefield where my wife's great grandfather fought, the homes in Ireland where my wife's ancestors lived...
Stay alive long enough to see how my grandchildren turn out...where they attend college, what careers they choose, who they marry...