Reading while taking a dump.
this isn't even a little thing, this is a fundamental human right that no man or government can infringe on. i'm pretty sure it's an amendment to the Bill of Rights, actually.
i really like chilling in the pool in the late afternoon, not swimming or anything, just listening to the sound of traffic from up the road mingling with the sound of my neighbors' air conditioners. it's not something i get to enjoy all that often, usually because of noisy kids or people arguing or whatever, but when i am able to it's always so nice, especially if somebody's cutting their lawn with a good lawnmower.
i also really like the sound of heavy construction from a distance just after it's rained, with trucks beeping and jackhammers jackhammering and all of it blending together into this constantly-evolving soundscape, bouncing off wet asphalt and wet trees and wet grass.