A couple of things spring to mind.
1. Years ago, I hacked my A1200 into a PC tower case,but the floppy cable was too short to reach the floppy drive.
I was desparate to get it running that night, and need the floppy to format the HD..
I didn`t have any spare IDC cable laying around to make one, all I could find was a reel of speaker cable.
So, I set about doing a "cut and shut" on the original floppy cable, and used 17 pieces of speaker cable to extend it..
Then it came to extending the floppy power ( no idea why I didn`t use the AT PSU..) and hacked some more speaker cable onto the floppy power connector on the A1200.
Turned it on, all was working well, but the floppy seemed a little slow. Then I noticed the lovely smell of burning plastic
I looked inside the case, and the floppy power cable was on fire :-o
Luckily the whole setup survived.
2. The same crispy A1200, powered up sat on desk..
I needed to grab a disk from a shelf high up above the desk, so being the impatient idiot I am, I stood on the desk to reach it...that`s when I learnt how fragile chipboard desks can be !
The A1200 hit the floor with a thump, then I heard the HD reset and Workbench came back up on the monitor. I really thought that the HD would have suffered some damage from the fall,but it`s still working 7 years on :-D