Thank you gift suggestions

[HBADPi]

I need some help. I was in a wedding last weekend and stayed with the bride's family for about a week before the wedding. Her parents were so wonderful and, despite the fact that they had a lot of last minute stuff to do for the wedding, were always willing to drive me places. They picked me up from the airport and dropped me off after the wedding, took me out to dinner a couple of times, and even paid for my nail appointment which shocked me! Anyways I want to mail them a little something as a thank you gift but nothing comes to mind. If anyone has any suggestions I'd love to hear them. Please keep in mind that I'll be mailing this so it cant be too heavy or easily damagable.