I forget if it was here or back when I was on that other site where I read it, but at least a year ago someone suggested "don't put it down, put it away" as a mantra to mentally recite whenever I'm holding something at home to prevent clutter build-up in common spits to sit. I don't always follow it, but it's been a huge help in managing my own item organization and management.

As a way to combat the difficulty I have with noticing messiness in visually busy environments like a household room, I also try to pick up a piece of refuse or dirty dish l that may have been forgotten whenever I know I'm going near or to the kitchen; I've developed that into a reliable habit, which is extra helpful when I forget why I went to the kitchen in the first place- only to go back to the kitchen for a second time, with yet another item in hand.

The individual actions are very easy, simple things I can remember to do in the moment when I think of them as I'm doing something else.

Edit: I'm aware the ask was about things we could implement, not have implemented, but I felt I hit the general idea; very simple changes that may improve QoL.