Hmmm a few are:

Rain

Rolling/rumbling thunder (not the violent smashing kind so much)

In the fall on a mild day, the sound the breeze makes as it blows through the dry/falling leaves in the trees and on the ground

The sound of snow as I walk through it

Laughter

Sighs of contentment from the pups

Dawn's welcoming whisper cheeps in the morning

Coffee percolating

Loons on the lake at night

Woodland sounds