I prefer to use the phrase out of combat heroicsAction Surge is not a combat resource. People USE it in combat, I think because they perceive the Fighter to be about combat, but the ability is not a strictly combat ability, and plenty of players use it for out of combat challenges as well.
Oh, and that reminds me. I also used Action Surge to do silly things during combat without feeling like I "wasted" my turn. Like, use my regular action to secure a rope to a handy for, then swing Tarzan-like through a crowd of enemys, using Action Surge to get in my attack.