Is there some other way to say, "courtesy of"? Let's say that person X gave me a dress; I would like to know a different, rather unique way to say that the dress came to me "courtesy of X". Can someone help?
The equivalent would be "Compliments of ...". That is, it has been provided by or through the auspices of the gift giver.
Your may say "By the kindness of..." or "Thanks to the kindness of..."
It is not too likely that "Thanks to... " will be misinterpreted as sarcasm but we do not know where you are or who you are talking to.