Dancing
Like most little girls, the Weasley granddaughters took dancing when there were younger, most did Ballet, some did Jazz and Molly wanting to be different did Ballroom.
This came in handy in her later life for balls at Hogwarts and weddings she attended.
She enjoyed dancing, when she moved out of home, she would often dance around her flat while cleaning. There was one time when Audrey dropped in unexpectedly to find her oldest daughter dancing to some song on her Muggle stereo.
"Oh hi mum, I didn't see you there" Molly said fixing up her hair.
"Sorry love, I was wondering if you would like to have lunch together. Your father had to help Bill with something"
"That would be great mum…let me just go and change" smiled the younger witch.
"You really should take up dancing again Mol, you're very talented" Audrey told her daughter with a smile.