I bought a $5 notebook to track coffee shop trips and the total shocked me.

After logging every latte for a month, I saw I'd spent $127, which made me switch to making my own and saving that cash instead, so what's a small spending habit you tracked that surprised you?

Shoutout to the Fluke 87V for proving me wrong on a stubborn autopilot issue

I always thought our old shop's Fluke 87V was overkill for most line checks, preferring a simpler meter. Last month on a Citation in Tampa, we had a pitch trim fault that wouldn't clear. After hours of chasing, I used the 87V's min/max record on a suspect servo wire and caught a 0.3-volt drop the other meter missed. That convinced me its extra functions are worth the cost for intermittent faults. What other 'overkill' tools have you guys found are actually essential for certain jobs?

Appreciation post: My car's AC died in July and I fixed it for under $100

I was driving home from a job in Tempe last week when my AC just blew hot air. I figured it was the compressor and braced for a huge bill. Instead of going straight to a shop, I watched a video, bought a $25 can of refrigerant with a gauge from the auto parts store, and found a slow leak at a hose connection. A new hose clamp and refill later, and it's been ice cold for six days now. Has anyone else had a win fixing something big by trying it themselves first?

A customer in my shop last month asked for a specific cut on a pork shoulder that taught me something new.

PSA: My first Python script to sort my music files did something wild

I was messing around with the os and shutil modules last night, trying to write a simple script that would move my mp3 files into folders by artist. I had about 300 songs in one messy folder. I ran the script and it worked, but then I saw my pictures folder was empty. I panicked for a solid minute before I realized my code had a bug. I used a wildcard that grabbed all files, not just .mp3, and moved everything into new folders based on weird parts of the filenames. I spent an hour fixing it by adding a check for file extensions. I learned that small mistakes in your code can have big, weird results. Has anyone else had a script do something totally unexpected like that?

I was at a shop in Phoenix that swore by using only factory paint, but I think that's a waste of money for most jobs.

They were doing a full respray on a ten year old Civic and insisted on the OEM stuff, which added like $400 to the bill. For a daily driver, a good quality aftermarket paint system from a brand like PPG does the job just fine and saves the customer cash. Anyone else think the factory paint obsession is overkill sometimes?

I thought the new ultrasonic cleaner in our Tulsa hangar was just a fancy gimmick, but it saved a $1,200 actuator.

Just fixed my 100th busted headphone jack this morning

It hit me that I've been doing this same simple solder repair since my high school days in 2008. What's the oldest gadget you still regularly fix for people?

Vent: I bought a $20 'miracle' avocado saver that was just a plastic cup with a lid

Saw it online and thought it would keep my guacamole from browning for days, but it just turned into a weird, slimy green soup after one night. What's the actual best way to keep leftover avocado fresh without buying junk?

Update: I finally tried that 'ice bath' trick for my pie dough

For years, I thought chilling the butter in the flour was enough, but a baker I met at a Portland food fair last month told me to put the whole bowl of mix in an ice bath for 10 minutes before adding water. I tried it with my apple pie last week, and the crust was the flakiest I've ever made. It handled the lattice top without any tearing. Has anyone else found a simple trick that made a big difference with a basic recipe?