I have almost all my t shirts from highl school and college stil! Wife has seen them for 10+ years now! Haha. She tosses them as they become ridiculously worn.
I'm not going to give away all my cheap trade secrets. But, I'm so cheap my high school and college shirts are now cut up snot rags. Virtually all our clothes come from the 2nd hand store. My wife is the queen of finding actual uniform shirts/pants from the school my kids go to at the thrift store. We do buy new shoes and sox but only on sale or with coupon. I only bought one new truck/car in my life back in '98. I had the GM credit card maxed out with bonus $$ to buy a 1500. That will never happen again. I drive used rice burners that last to 1/4 million miles now.
We have so many compact fluorescent/LED light bulbs (a case not used yet,) hang our own laundry to dry, and throttle the thermostat on the furnace so far back, hang curtains to stop any air flow/infiltration, and close off the vents to less used parts of the house that we are in the top 10% of least energy users in the Syracuse area according to NYSEG. And that with two teenagers in the house.
Our coffee maker is a Mr. Coffee from the thrift store. Cost me $5. We grind already ground beans to powder them down to Espresso style in order to leach out every milligram of caffeine we can get out of them. After the pot is gone, I put another cup of water through for the last cup of weak coffee. And never use the K-cups. Even the guy that invented them says they are an environmental disaster and could easily be made decomposable, but don't take my word for it.
Like BigJohn I research any/every significant purchase and always buy in bulk sales. Waste infuriates me. All kitchen scraps are composted. We boil the bones and vegetable scraps to make soup stock or make rice/beans with. Nor'stacker, I'm going to try out your hash "a la Brick" some day..
I understand the multi-wipe piece of TP but, draw the line there. Our kids had cloth diapers and my wife used a pump to stock up on mother's milk for the kids in case she went dry. Most got donated once the kids were weaned. Yes, you can donate mothers milk.
I did buy a custom suit in Singapore on my way back from the Brunei oil fields but that was over 3 decades ago. Perhaps when my daughter gets married I'll get a pin striped double breasted to wear with Fedora and do the original Gangsta look.
In short, living austerity with the depression era attitude of "Use it Up, Wear it Out Make it Do or Do Without".