Winky, your story about the jump leads makes me feel all warm and fuzzy!!
I'm an engineer, therefore working abroad a very male dominated environment, and I've got a couple of positive examples to share.
As part of my grad scheme I spent a few weeks working/shadowing on a maintenance shift rotation on a power station, so there basically observing and learning and not being useful, or so I felt. I kept offering to make the tea/coffee, as everyone else was actually doing work, but I wasn't allowed as it would create the wrong impression that I was the tea girl and not an engineer from the headquarters. It wasn't something that I had considered in my youthful enthusiasm and I'm grateful to the (male, mid 60s) engineer that was in charge from letting me make that mistake.
Another colleague once told me that I was, "good at xyz, for a girl", and he was really confused when I tore a strip of him as he genuinely thought he was complementing me. When I explained that it was the "for a girl" I took umbrage at, I was either good at something or I wasn't, I swear I saw a light go on in his head. He then repeated the compliment, without the qualifier.
Being in a meeting as quite a junior person, but the slightly more junior but male person being the one sent out of the meeting to make photocopies. (so, so wrong that that feels like a victory, but there we go)