I once gave a very good friend of mine some airline miles so she could travel within Central AMerica...I wasn't going to use them and they were going to expire...giving them to her also "reactivated" my account, so that I still have 18,000 miles available today!... I also helped my daughter's teacher get a special rate (to which she was entitled!) on a flight...that saved her about $179!.....I have saved the company I work for about $2,000 in translation services (although, I probably have caused them some expenses due honest mistakes!
, so let's say we're even!)
I have lent my car to my cousin and my sister whenever their cars have been in the shop for long periods (1 week+)...they have returned the favor, too!