Times are definitely getting tougher for folks on a fixed income. All of your suggestions are good ones.
As we used to do when I was a kid, I change my 'good' clothes as soon as I come home and wear old clothes when no company is expected. I wear clothes more than once, cuts down on the laundry. I wash out the Swiffer cloths and use them over again many times. If I use a paper towel for just a little 'wet' task, then I save it for wiping up the floor. I use the HandiWipes wa-a-a-ay longer than recommended, throwing them in the washer every time I run it. If paper napkins are set at the table and not used, I'll use them again. There are lots of examples of things that my depression era folks taught me when I was little that I incorporate now.