I’ll start: I love listening to the washing machine running. Relaxing, sounds like hard work I don’t have to do. Looking forward to the clean clothes and nice smell! Sewing machine sound makes me all giddy. Sound of my 1988 car engine.
I find chain saws and brushcutters extremely annoying. On some days in spring and autumn I can get quite grumpy about it, even though I rationally know they also save a lot of hard work.
In the summer I run a large floor fan blowing air out the front door screen all night. It works like a whole house fan, pulling cool night air in through open windows. It’s loud, but constant and helps me sleep. It’s running right now, the morning is the coolest part of the day.
My next door neighbor’s dog used to bark at the slightest sound. The dog was outside 24/7 and apparently slept during the day. Once it started barking it would continue for 10 minutes or so. I think the dog died, because it abruptly stopped about two years ago. He hasn’t replaced the dog, so that’s good.
The assholes that rev their motorcycles around the neighborhood at night. There aren’t many of them, at least. That’s a summer thing, of course, so the fan helps mitigate that some.