Satellite water pump.

Initial investment is huge bill, but it pays itself off than monthly water bill.

Also, the water is clean.

In 2009 I bought a lot of 10 late 90s Sun servers (1997 machines upgraded a few years later with better CPUs) for $300. Original list price about $2.5 million. After fixing a few problems and swapping parts to max out half the machines, I kept a few as my compute servers, and traded the rest for SGIs. An Onyx for the museum, and a small (one 6' rack) Origin-2000 for myself.

Beyerdynamic DT 900 Pro X headphones. Love the sound profile on them.

One of those nice traveling Bluetooth speakers about half the size of a brick. Whenever I travel I bring it and it is a huge improvement having music that sounds good everywhere.

It was more than I wanted to spend but it was money well spent these many years later.

my futon mattress. custom made to my specific requirements. worked well for the last 20 years.

Got myself a samaung galaxy active a couple months back for like 20$ off ebay. Its a nice reminder to keep my body moving and helps lose some of the weight I put up over the years. I do however keep it offline now and just manually record my info for privacy sake. Looking to get a casio royal as a more general watch for myself this christmas and keep my active as a workout watch instead

Nothing really fancy here but:

• Clevo NV41MZ Laptop, a beast compared to my stupid T495 thinkpad and corebootable! Very hard to find.
• my roadbike, its very classy 2001 stuff, Campagnolo Daytona (this series doesnt even exist anymore) but its fast as hell and looks great. Just love racing through the streets
• that damn Jack&Jones Winter jacket I got 5 years ago. Already had a burn hole from fireworks, but apart from that I went through so much with it and its still like new.

Glerups. I wear them all day

Small foldable bathtub. When I say small, I mean still big enough to drown myself if I wanted to.

Along with that I also bought a suction cup phone holder for cars that I put on the wall. Hands free YouTube videos while soaking in almost boiling water.

40 bucks total for a simple but nice comfort

Ski goggles. They protect your eyes in the heart of winter from freezing winds and keep your glasses from fogging up or getting wet. They're great for stopping snow blindness too. 10/10

Reinforced binder paper where the holes are triangles and reinforced with tape. I hadn't had to deal with my papers getting ripped out of a binder/refillable notebook since getting them