Well, I don’t budget, and I definitely tend to buy a lot of things I don’t need, but I have a few basic guidelines that keep me sort-of in check. I only buy something if it’s a deal, and not like “20% off at the mall” deal, I mean it really has to be a bargain so much so that whatever it is I could immediately or sometime down the line resell whatever it is for at least what I paid for it. It has has to have some kind of real use, not decorative crap or luxury that doesn’t provide any utility or value, so a lot of items that people are posting like quality blenders etc absolutely fall into that category that I think are okay to splurge on. Lastly, obviously I have to have the cash for it AFTER I’ve already hit my aggressive savings goals.
My most anti-mustachian purchase for sure was an AWD SUV, but I bought it used (a 2006, bought in 2013), and it was an excellent deal, and it’s a mid-size import not a giant American monstrosity, and I live in semi-rural Canada and use it year round, and it gets used hard to haul stuff and do work, plus I maintain it myself and have saved a crazy amount of money by doing all repairs and maintenance.
Probably the next dumbest was a boat, but like the car, I got a great deal on it used, is a very reasonable 14’ aluminum with a small motor, and I pretty much only now use an electric outboard with it, and after owning it for 15 years I could still probably resell it for 50% more than I paid for it, and have spent very little on it over the years ($25 a year for trailer insurance, a bit of fuel when I use the gas outboard, and the odd can of spray paint to touch up the paint on it, and one new set of tires for the trailer a few years ago.)