Rewired the garage and attic, replaced some outlets and switches, added some switches to eliminate pull chains on some basement lights.
Never painted, never changed carpet, never changed curtains. All that stuff is the same as was there when we moved in. I don't spend much money on decorative improvements. I am using a dining room table that is a basic oval which we got from my wife's grandmother when she moved out of her mobile home. Could have gotten a really fancy dining room table of solid wood from my mother-in-law but instead gave it away because it would serve my purposes.
What I should have done when I moved in (2021) was enclose the back porch (did that in 2018 and love it), and get an awning over the front porch (did that early this year) and it is great.