Helped a neighbor clear a clogged septic line, and later, helped them install a new toilet flange and a toilet.
I'm not thrilled about the flange installation... it was a bit hokey, but we were running out of options and they were desperate to get their toilet working again. So, we got it on, and its working. I hope it stays that way for a while.
Helping your neighbor feels good. If we can't help those close to us, what are we here for?