Paper and pen
Small glass bottle
Herbs for gossip or banishing

Take a small piece of paper and write the names of the people who are gossiping or making trouble for you (Or if you do not know their names, write “My workmates” or something similar).  

Fold this paper up and place it inside a glass bottle.  Add some herbs to top gossip or banishing herbs.  Half fill the bottle with water, and place it in the freezer, saying:
 

“I place your acid tongues in the freezer.
 I bring a halt to slander, gossip and lies.
 For the good of all concerned, and harming none,
So Mote it be!”

Put the rest of the herbs somewhere at work where the gossip is likely to take place.  Leave the bottle in the freezer for as long as you think you need to.  
 

Once you feel you do not need the bottle any more, defrost it and pour the contents out onto the ground.  Saying
 

 "I release you to the Earth,
 May you remain peaceful towards me."