All of the time! Especially from the doting (dotty) mothers who are too cheap to get a professional dressmaker to make the tutu or costume for the concert.The best response is to say,"I'd be glad to do it - I usually charge $100, but as you're such a good friend, I will only charge you $50." That way, if they do 'con' you,you are getting a little reward for your effort.
The usual comment that I really dislike is,"You would only be doing it whilst you watch TV anyway".If we continue to accept the put - down we continue to undermine the status of quality work from quality artist sewers.