Friends are the family you choose for yourself: and you have chosen very well! That will become all the more apparent today when someone backs you up in a potentially embarrassing situation. Once again, this person has come to your rescue! To repay them, don't get out your credit card or make dinner reservations: tell them how much they really mean to you, how much you value them in your life. Honest communication like this will make a bigger impression on them than any gift could.