The company has relied on government support, but the government is now threatening to 'cut the apron strings'. [=to stop providing support]
He's generous, but there are always 'strings attached'. [=he always expects something in return for what he gives to people]
He really loved her but she was just 'stringing' him 'along'. [=making him think that she loved him so she could use him]
(..) Just try to think of nice calm things... Raindrops on roses and rabbits and kittens, bluebells and sleighbells and- something with mittens... La la la la... something and noodles with string. These are a few... I'm all better now. I helped! Okay, look, this is probably for the best, y'know? (..)1994 TvShow: Friends Title: The One Where Monica Gets a Roommate Season: 1 Episode 1