Great topic.
I've been fortunate enough to build a nice stash of cash mainly because I had a good paying career, I've never been obsessed with nice things (actually the opposite, I like figuring out the cheaper way) and I never had any kids (which we all know is expensive as holy hell).
Here are the things that I'm most proud of finding cheaper alternatives.
1. Entertainment. Cut the cord and get an Amazon fire stick. Why Amazon, because it's the only streaming device I know that allows you to put third part streaming apps on it. That means nearly all current programming is available through the 3rd party app. From movies to your favorite shows to live sports....it's all out there.
All it costs is the fire stick ($55) and a VPN subscription ($4 a month).
Only wrinkle is I think the industry is going to start cracking down on 3rd party apps but they haven't yet and it will probably be country specific (which is where the VPN comes in).
-Shared YouTube TV account. YouTube TV allows for something like five separate accounts on a plan. My GF currently covers it but her dad and I have our own accounts and he lives in Arizona.
2. Food: Learn to cook and learn to do some basic butchering. There's sooooo much amazing cooking advice out there and by cooking yourself you can cut your food costs by 70%. I have learned to make everything that I love as good or better and faster than take out (when you account for lead time to drive to the place). From Giordano's deep dish pizza to chic fil a sandwiches to benehana chicken fried rice with homemade yum yum sauce to amazing pasta techniques to salads to steak n shake smash burgers to fries that are fresher and better than restaurants to incredible steaks to tacos and on and on and on. I save so much money and it's fun as hell to do.
Other things w/food:
-Buy a casket freezer.
-Visit goodwill stores first for kitchen appliances (I got a bread maker and a vac sealer for $10 total).
-Buy deli style food storage containers for leftovers (super cheap, super convenient and stacks well in the fridge saving space).
-Learn basic butchering (I can buy a whole chicken for $12 to $15. From that I get 2 breasts, 2 tenderloins, 2 legs, 2 thighs, 4 wings, 1 carcuss that makes a gallon of chicken stock, leftover meat that makes incredible dog treats) because I learned how to cut a chicken. Same thing with pork shoulder. It's one big bone (that you freeze for two weeks and give to your dog) but you get a bucket of pork carnitas meat to be used for tacos, pasta, salads, bbq, etc.
-Use a wok for deep frying. It's wide so I keep splatters to a minimum, it's easy to slide food into the oil safely, it's easy to grab food from the oil.
3. If you're in the market for a new car, consider a hybrid. I just bought a used Chevy Volt and it's the coolest car I've ever owned. I get -40 miles of pure EV range which covers my total commute.
I have unlimited milage because it has a gas engine (which is basically an electric generator) which gets around 35 mpg.
It's got really good get up, it's a smooth as butter ride, it's extremely quiet, I very rarely use the brakes (as it has regenerative braking which puts power back into the battery). Other than our of town gigs I never have to go to the gas station. Recommended oil changes every 25,000 miles and the disk brakes should last forever because I never use them.
As far as money saving, I supposedly pay around $3.50 for 100 miles of EV power. Currently with gas prices being what they are that's over $20 in my Lexus.
Extrapolating that out I typically put around 18,000 miles. At the ev price that will cost me $630 a year.
On my old Lexus that would currently cost me $3,600 a year.
Now if those factors stay constant and I keep the car for ten years (my Lexus is 20 years old) that's $30,000 in gas savings.
So if you're in the market for a car and do the majority of your driving within a fifty mile radius...I strongly recommend the Volt.