My cell phone, until disaster happened.
I recently damage my phone's existing screen pretty badly. I ordered a replacement LCD display touch screen digitizer assembly kit. Last night, I was doing the meticulous work of removing the back and all the tiny screws and I disconnected all the intricate parts, etc. I was doing this task slowly and carefully. It was taking a while, but it was going well. Once I was getting to the end stages of my disassembly, I went to remove the battery. This part ended up going terribly. As I was removing it, it burst into flames. I quickly cast it aside. I had drinking water next to me that I threw on it. It looked like an angry piece of space junk. I hurried and got more water. I kept pouring water on it. Toxic fumes were burning my eyes and the house was filling up with smoke. I hurried and opened the door, then I turned the fan on high and pointed it towards the door. I went outside for a while as I let the house clear of fumes and smoke. After a while, I brought the charred remains outside and poured more water on it, just in case.
So, if you take it upon yourself to replace your existing cell phone screen folks, be extra, extra careful with the battery removal!
Btw, a dear friend surprised me with a new phone this afternoon. It will arrive tomorrow! I'm very thankful, and also thankful I wasn't injured and the house didn't burn down! The Lord has blessed me
You can't always be too careful when disassembling tiny things. Sometimes you gotta leave some tabs broken and a few screws loose. Makes it easier to disassemble again and again.
I've never had a battery blow up on me, as haphazardly as I've always handled them.
When I first installed the solar-charged battery in my car, I didn't bother checking if the panel had proper overcharge protection before I permanently assembled it together. So for a few days, I practically had a shrodingers bomb between the front seats of my car. (Don't tell Magenta that)
It did turn out to have proper protection anyway, determined over the course of months of observation.
Lately, I bricked the LTE modem on my laptop by flashing a bad firmware, and the pcie card it's on happens to not have the two jumper solder-pins that make it easy to reboot the modem into emergency mode. So I've had to do some awkward thing, shoving a little wire under the modems CPU to jump it to a far-away data rail, having to stretch my fingers to keep the wire pressed down while turning the laptop on at the same time.
Then the emergency mode seems to have some proprietary way of being interfaced with that I still haven't figured out for my OS.
So, currently my laptop is sitting disassembled in another room, likely to be its final resting place, since Jesus tells me He's going to be here before I'm able to do anything about it.
But that laptop was how I was recording something I was going to show people here. The day it broke, I decided I had to improvise (The USB capture card I was using wasn't very good anyways). So I got a nifty pocket-sized all-in-1 capture device to record everything instead, which just arrived yesterday:

No, analog cables are never obsolite. I will gladly convert a purely digital stream to analog and back to digital again, because fidelity is just a fad when fine details are easy to discern anyways.
Anyways, since this device was so old (It was vaccum sealed brand-new, but must've been manufactured decades ago) whatever kind of weird chemical they used to make plastic feel 'soft' back in those days shedded itself off and is now just a sticky film on almost the whole device. I'll wipe it down with a stong solvent when I get the oppertunity.