There's 3 things that really stand out for me that I would say made a massive difference to my life:
Cordless screw driver. Bought the day after building a flat pack bed with a crappy screw.driver that just shredded my hand. Thought it was frivolous at the time, but I've used it so much since. It's light, small enough to fit in my pocket and good for 90% of DIY tasks.
Tassimo coffee machine. Bought it 9 years ago, use it every day. Nice quick easy coffee. What's not to like.
My first DSLR camera. It was a Nikon D50 back in 2005/6 and it sparked my interest in photography to this day. It gave me a hobby I can take lots of places and do it alone or with others.
I never loved the D50 camera itself, but I did get some really nice shots with it
My bike. I use it daily to get to work, to the super market, visiting friends. It keeps me healthy I do not need a car and I can drive wherever I want all the time. It cost me 500€.
My Bodom french press. I use it daily to quickly make 2-4 cups of coffee, it tastes fantastic, provides coffee and is high quality. 35€.
My Amplifier and Wharfedale speakers. I bought them 2 years ago for 500 €. All my life I had cheap active computer speakers or bluetooth boxes. Everytime I tune them up, it get's a little warmer in my tummy.
All 3 things are far away from high end, people spend the multiple on what I spent. Still they all make me super happy and I will watch and keep them until one of us dies.
What amp and Wharfedales do you have? I have my PC running through some Diamond 9.1's and a NAD C310 amp. It sounds pretty good. In the living room I have an Audiolab 6000A and Wharfedale Pacific Evo 40 floor standers. Those speakers could be on my list. Bought them for about £250 20 years ago and I think they're fantastic.
It's actually a receiver, a Yamaha R-S202 D, nothing special, but I wanted to have bluetooth and radio. The speakers are Diamond 12.0, a pretty small version that fits on my desk. I have my computer and my record player connected. As I am not buying on Amazon, the speakers were pretty hard to get (in black of course lol) at a reasonable price, I think it was about 250€.
That receiver looks very nice and those Diamonds are the updated higher end version of my 9.1's. I bet it sounds great. I have some foam under my speakers which helps control the bass.