magic wand

noun3

1. •
   A wand, usually made of wood, that is used to perform magic.
2. •
   (figurative) A means which will effect an instant solution.

   • We have to work hard together to find a solution. There is no magic wand.
3. •
   A long vibrator with a vibrating rubber head.

   • Stealthily, she slid her nightstand drawer open, located the knee-high sock and pulled out her magic wand vibrator, ready to go with new batteries. — 2017