Boring answer but my hair clippers.

Ain't been to the professionals for years.

I do look like the wild man of the woods though

My power tools. I'm not a professional but doing all the diy home repairs myself with the right tools for the job has probably saved me tens of thousands of dollars in contractors. And believe me when I say get the right tools for the job, it's worth it. You can fight with the wrong tool for hours trying to get a job done poorly or do it right in minutes with the right tools for the job. Not only is your time valuable but having the project done correctly the first time means you don't have to pay to fix it a second time. Even if you're the one doing it the second time, you still have to spend the time ripping out the garbage you put in and pay for the materials to do it right the second time.

Ditched gaming chairs, got an ergonomic office chair with several adjustment points.

It's mesh seat and back, so its breathable in summer, gentle and supportive. I sit upright with no back pain. I lock it in place upright if I'm not using the armrests (eg: controller). Comfortable enough you quickly forget its even there, which is what you actually want in your practical furniture.

Every 'gaming' chair I've used cost almost as much, was a sticky pleather mess that flaked within months, pneumatics shot within a year, weird 'racecar' leaning back, fucked up my neck. But hey, at least it was in garish pointless colours? (Also, fuck those chairs that have the little 'edges', are they supposed to cup me in my seat Luke a cot? Because they get in the way).

I will never game in a gaming chair again. Quality ergonomic office chairs are DESIGNED for sitting in for hours at a time, and it shows. I've converted several others now.

I’m not sure I’m quite there yet but I’m on my way: my sewing machine.

I sew clothes for me and my husband. I sew my kids’ Halloween costumes. I sew bags; my last two purses have been made by me. One is still in great shape aside from the handles; my kiddo said I should get (or sew) a new purse and I replied, nah, just need to re-sew the handles, no biggie.

The only reason I don’t think it’s paid for itself quite yet is because I bought a pricey machine in 2021 after struggling with a hand-me-down for a while.

My sous vide, 100% I have never gotten a steak from a restaurant that was better than what I make at home with my sous vide and a good thick iron pan. It cost $100 and it probably paid for itself with one package of steaks from Costco.

During covid I bought a 4x4 pickup for 10 grand and it is maybe the best purchase I've ever made in my entire life. 2007 Sierra with every option except sunroof. It's been to the arctic circle and back and I've been out camping at least every second weekend since obtaining it. It's a little beat up but mechanically sound so I don't feel guilty about things breaking or putting kilometers on it and I use it way more than I ever expected to

A book. Teach yourself Perl in 30 days. (Edit - may have been 21 days)

I bought it around 25-30 years ago. I have dyslexia and autism and have had problems learning from books in the past, but something about the way that was written just clicked for me.

It allowed me to write some pretty cool software, including a huge system that ran a large animal charity for a very long time, tons of automation software and scripts, and several full webuis. Indirectly it led me to a new career where I write perl every day.

(I can write in many other languages now, but that was the keystone of everything for me)

My 3d printer(s). I bought my first one used for $100 ~10 years ago and offered to print a small model for someone's college capstone project. People learned I had a printer and started coming to me for all sorts of small things. I would only charge for substantial jobs but people would end up paying me anyway. I quickly got a resin printer and started selling miniatures for friends. I eventually got contacted by one of the major manufacturers who would send me return units and replacement parts so I could repair and tell them what was broken, if anything, then I could keep or sell them.


Everything I have done with 3d printing has been subsidized by side jobs. It's a super fun hobby because 3d printing sits at the nexus point of basically every other hobby. I have done jobs for people building rat rods, model trains, cosplay, interior designers, hydroponics, brewing, architects, drones, and more.

Hair clippers. I started with a $25 cordless rechargeable one that I got on sale during the pandemic when everything closed down. I recently upgraded to a much better and more powerful corded variant. Looking at how much haircuts are these days plus tips, it definitely has paid for itself multiple times over.

Robot mower. I bought one on sale 4 months ago. It hasn’t paid for itself yet because I’ve only had it for a short while, but I believe within a year it will, with how much time and effort I save for myself. That and my knees and back are thanking it.

Safety razor

Blades are extremely cheap and always gives a great shave.

Elliptical and dumbbells

Gym memberships add up quick so went with a cheaper elliptical and a nice set of adjustable dumbbells.

Kobo ereader

As I get more into reading I've come to appreciate that this one allows loading my own ebooks from my PC which can save a ton depending on use case.

My bike is the only thing I can say for certain has paid for itself. If I had paid $1 for each trip I’ve taken on it, I would have spent far more than it cost me.

I have a kegerator that isn’t seeing much use as I don’t really get full kegs of beer anymore these days. We were buying cans of seltzer by the case and I figured I could just make my own. So I got a new 5 gallon keg for around $100 and some connectors and stuff. Got my co2 tank filled. Filled the keg with water and cranked the pressure up. After a day or two I had decently carbonated water. Pour a glass like you would a beer, add a little lemon or lime juice for flavor and boom. Seltzer. Been doing that a few years now. Between the co2 fills and the water from my tap it probably costs me $2-3 per 5 gallon “batch”. Compare that to $10-15 for a case of twenty four 12oz cans.

Leatherman. Spent like $140 on a good one (Signal) and it was used nearly every day. Pliers, screwdriver, pry, cut, etc. Great to have easily available on the hip.

A slipping torque wrench, two jack stands, and a hydraulic jack. I change the summer and winter tires on several cars twice/year and have been since the 90s

Stainless steel cookware. Spend the extra money to avoid shitty non-stick and aluminum. Steel heats evenly and maintains temperature. My food has improved a lot just with this change

Related: a good knife. Get a good santoku and you'll be prepared for the vast majority of kitchen tasks.

House insulation.

I live in Australia where the minimum insulation required by law is a long way below inadequate, and many cheap contractors go below the minimum because it's so hard to prosecute them.

I already had solar and a house battery, so the next obvious step was replacing the insulation. With my already very low electricity bills I cant say that it literally paid for itself (although it would have without the solar and battery), but it has made the house so much more comfortable. On some summer days, the AC would be using 7kW and barely keeping the inside temperature down to 30°C/85°F. Now it uses 3-5kW and the whole house stays comfortable.

Also, finding and patching the massive gaps from the previous "landlord special" house extension made a huge difference to the temperature of that room, and explained how lizards had managed to get inside.

My robot vacuum! My robot vacuum with the little home dock tower thing that lets it dump its load and keep vacuuming! I had the original robot vacuums that didn't have a dock to dump their garbage in and it helped some but mostly it needed to be cleaned more often than I would have vacuumed my house without it, the newer ones with big receptacles are so worth it, once a week I dump his container and change his filters and maybe give him a little wipe down with a dust rag and he's happy as a clam. I bought a set of replacement filters so that I can take the old filters out and use my big vacuum on them to get most of the dust and then chuck them in the washing machine, once they're clean they go in the filter drawer and I just rotate filters once a week.

DE-razor I shave with a new blade every second shave and it's still cheaper than any other shaving method that I've tried. On top of that the shaving soap last for ages (literally years) and the shaving experience is fantastic if you get the right razor.

Don't go down the fancy road to start with though. I have some expensive stuff that I don't use and have fallen for a cheap razor from temu and proraso green soap. Also just a nylon brush works fine for me to lathe up the soap

While it hasn't paid for itself yet literally, getting a hybrid electric/gas car has been amazing. I only fill up roughly once a month and it costs ~$20. I've already had it 6 years and the only thing I've had to do is bring it in for the occasional recall notice for system updates.

Setting up a fully automated system to download, track and organise Linux distributions onto a NAS under the stairs. I used to subscribe to a bunch of services that would provide access to all sorts of Linux distributions for a flat monthly fee, but I realised that I often was only really interested in one or two specific Linux distribution so I really didn’t need to pay for these services.

Now I just download the Linux distributions that I actually want to install. It also prevents my kids from endlessly installing different Linux distributions. Not really a productive use of time.