That's really cool if you like interacting with people. I borrow things like that from my neighbors or parents if I can. And I'll gladly lend them similar things, though mostly I just have my time to offer, which can actually be very valuable to a neighbor in need of assistance. I'm close to where I grew up so I know all my neighbors well. I don't know what I'll do if I move off like I plan to.
I don't see an issue with hanging on to things you have a purpose for. Doesn't matter if you need it once a year or every other year. If it's practical and it benefits your happiness, I say just keep it. Trying to trade on craigslist every time my house gets dirty would be way too much a mental strain on me.
Yeah that's right. I just gave an excellent example of communism. It's an extremely beneficial concept. If ever neighborhood operated that way, imagine how much less waste humanity would accumulate.