Chaos and I are not really good friends, personally. Like you, I prefer to keep things spartan if possible - typically, this is not so possible with children in the house.
My personal solution to chaos (which is not so much a solution as much as it is a mental survival mechanism) is to prioritise and keep lists. Lists, lists, lists, and work from the top down. Having a good DGAF attitude does help, too.
oh yes, learning to dispense our energy wisely is key and also lists
I make sure to just keep my magic lists on post its which are everywhere because it keeps me focused and slaps away much bullshit :)