One thing about being surrounded by farms (and orchards, and vineyards, and...) is that you're surrounded by food--inundated by it, even. And since those who grow it have a vast oversupply when it comes in, as one person/family's cup runneth over all available storage it overfloweth toward everyone in sight. Or maybe, people are just generous. Still, it's kind of cool to watch resources spread all over the place, more or less of their own volition.
Part of it, and maybe the beginning, is the borrowing thing and the helping-out thing. The canonical example there is Jill's trailer. A good trailer is one of those resources that (for most people) doesn't get used enough to motivate the buying of it (I was shocked to find out that a decent trailer--sans engine, sans drive train, sans passenger accommodations, sans a radio even--costs nearly as much as we paid for our little car), but Jill has a good one, and she freely lends it to anyone who needs it. In fact, the main challenge in using the trailer (besides turning it around in her drive) is tracking down who's got it at the time. Huge win--for hauling compost and fence gates and sheep shit there is no substitute--and we generally leave her a pottle of Krys's jam or a bottle of wine in thanks.
In general, Krys's jam turns out to be excellent currency for compensating favors and greasing the social skids, but she's ramped up that act by an order of magnitude this year with tomatoes. The polytunnel turned out to be a boon for production. Between that, the number of volunteer tomato plants popping up all over, and her unmoderated tendency to experiment--I'm not sure there's ever been a new variety of tomato she could say no to--we've got tomatoes coming in by the truckload. Fortunately, a lot of other people seem to have had troubles of one kind or another with theirs, so the floodgates are open. This year, Krys is the Tomato Lady. Nobody who comes over gets away until they've taken on a big bag of luscious fruit. Then there's all the surplus eggplant, sweet peppers, eggs and even chickens to dispose of.