One of the things my parents taught me (rather showed me, because they live and practice it) is that it is a must to show gratitude towards anyone who has done something nice for me. A simple thank you, or a thank you note would suffice but sending gifts, whenever possible and budget permits, is better. How about sending a thank you gift basket to someone who has done you a favor and didn't ask for anything in return? Or a book of the person’s favorite author to add to her collection? You get my drift? But if the person refuses to accept gifts, then paying forward is the way to go. I am sure another person can use the extra blessing, right?