Wow, I love your question. I by NO means rich, and have always had to budget carefully. There are only 2 humans in my household right now, and one way I save money is buying in bulk. I buy a family size package of meat, (when it's on sale), separate it into 2 servings each, and freeze.
With gas prices, I buy a bus pass, and ride the bus often. This saves on gas and parking, but unfortunately, not insurance, lol.
When my contract with Sprint expired, I did not renew it. I have a pre-paid cell phone now, which works fine for me, since I didn't use it that much anyway, and texting I can live without.
I bundled my Charter cable and internet, but I don't trust them with a phone, so have a very basic land line plan. I also complain when Charter has 'issues', and ask for a credit (which happens).
I cook at home almost every night. I have a very TINY yard, but I grow tomatoes, peppers, sqaush, okra and mixed lettuce in containers, and they are flourishing....I'm freezing/canning/pickling. It's a good thing I like to cook. We rarely eat out, but enjoy every bite and minute when we do. I don't stop at Starbucks anymore. I can make a perfectly lovely Non-Fat Vanilla Latte at home.
I haven't bought a NEW outfit for years, but I have bought "new to me" clothes at a consignment shop. (Sorry, but Goodwill doesn't carry what I will wear).
I no longer buy bottled water. I did buy a Britta pitcher, and pour that water in OLD (well washed) water bottles. I actually like that better, as I can stick the water in the freezer, and it stays cold all morning, as I sip it.
When the checker at the grocery store asks "Paper or Plastic", I ask for paper. I use those paper bags for draining anything fried, instead of paper towels. When eating at home, we don't use paper napkins of paper towels. We use old CLEAN wash cloths. Even for company, I have linen napkins...much more elegant too.
I have so many money saving tips. I've lived like this all my life. My home is paid for, my cars are paid for. I have a few dollars in the bank. I put 2 boys through college (they had to help, with scholarships, grants and part time jobs).
When my dog needs to go to the vet for an emergency, of course I can pay on the spot, but....having been a dog lover/owner for so many years, I am pretty good about assessing what is an acutal emergency and what is not.
Now....I'm going to give a tip to those who are living paycheck to paycheck. This isn't the time for you to adopt a pet. A pet is a lifetime commitment.
Best wishes.