Funny thing about living in the city, where Black&Decker power tools are seriously over-represented, is that people don't often ask to borrow your power tools. A rake or shovel, sure, or maybe your Toro SuperRecycler lawnmower when theirs stops working. But they somehow know either that real power tools are outside of their skill-set or that the people who have them in spite of living in the city must be experts, and they instead ask if you could help cut/drill/weld/solder/etc. whatever it is that they have in mind to work on.
What I've seen with saws is that folks in my neighborhood generally ask well in advance - can you help cut X next weekend? - and then have the work area meticulously clean of all unrelated debris, materials, and what not. So it is really easy - come over, cut X, BS a bit, and leave. Sometimes they even send you home with cookies or other baked goods. Not a bad deal, honestly.