A few purchases that I made in the past year or so for which my only regret is not to have bought them earlier:
* My Air Fryer (Cosori Dual Blaze). This thing now cooks about 90% of my meals and has saved me so much time and effort it's not even funny. Also probably money because I don't use my oven anymore, and I waste a lot less food because I find it a lot easier to cook it - so no more food rotting in the fridge. Bought it during Prime Day last year and OMG YES. The only thing it's made me lost is pounds.
* My new home office. Entirely revamped in January, partially paid for by my employer (nice perk). The whole overhaul probably cost me about $1.5k. I'm now much more productive and motivated, and feel much better - more active, less back pain, a lot less leg swelling. Stand-up desk, monitor arm, new headset, new face-punch-worthy office chair (Herman Miller), mucho stuff, Ikea shelving, and most importantly...
* My buzzwordy, gimmicky, ridiculously first-world-y under-desk walking treadmill. I still shake my head at the idea of it, but I wanna marry it.
Oh, and it's not *exactly* spent money, but I loaned $50k to my sister so she could buy her future retirement home in our home country. I now own a few square feet of this little house right next to the ocean, so now we have a vacation home for the next few years, a backup plan for my parents should old age push them out of their current home, and my family is happy. Plus, I'm getting interest lol.