Earlier this week I was having trouble charging my laptop. (I'd been having trouble for a while, it just got really bad by Monday.) I had to fiddle around for ages to find a position in which to physically hold the charger at an angle in the charger port, in order for the laptop to charge.
So I took my laptop into work for one of our IT guys to look at. I was right, it was the port that was the problem. Turns out the soldering my dad did for me last year when I had a similar problem, wasn't as good as he thought, so the IT guy at work re-did it for me.
When I got my laptop home, it wouldn't connect to the internet, so I took it into work again. The same guy sorted the wi fi out for me (the switch had broken).
I thanked him so many times, because I am SO grateful for his help. He's a lovely guy who does favours like this for pretty much everyone who asks; I made sure to ask politely and thank him, because I appreciate he did me a huge favour. A repair place would have charged me a fair amount of money for the labour, whereas my colleague did it for me for free. This isn't in his job description, by the way - this was my own personal laptop from home, wholly unconnected with work, which he didn't have to take a look at. I'll make sure I buy him a drink or two at the staff summer drinks do.