I think we all (on our cul-de-sac) borrow stuff pretty regularly. Neighbors tend to borrow my DH because he's rather handy (he used to work maintenance at a large apartment complex... he can pretty much do anything to a house, and generally has his own tools to do it). If a car is broken down, or a water heater went out, DH is usually one of the first calls, to "assess" the damage and come up with a game plan. Sometimes DH will offer to do the repair himself, or sometimes he'll suggest they call a plumber, or AC guy or whatever. But if he has the time, he'll genterally do it.
We're the youngest on our block by about 10 years, but we all get along well. We actually all went out to dinner one night to celebrate 3 of the guys' birthdays, one (DH) turning 30, one turning 40, and one turning 50!
Sometimes someone will come over and ask to use our lawn mower because we have a bag catcher and they want to mulch with their clippings, or we'll go snowblow someone else's driveway because we know she's working an overnight shift, and she's divorced, and her son is away at college.
If we see someone piling carpet up outside, we go see if we can help out (basement flooding - neighbors don't know what they would have donw without DH - they were able to save the drywall!).
Weirdest thing we've borrowed was a beer bottle capper. Ours broke when we were only 5 bottles into bottling a batch of beer. We just called up neighbors down the street who are also hombrewers, and he had his high-school aged daughter run it over to our house.
