Actually - you don't. ;-) It's not an interactive object in the game, just decoration.
Maybe Griseldis will need the broomstick in a later game ... (if I ever make another one with her)
Viewing post in To Croak Or Not To Croak comments
Yes I see. But I could use a hint. Have made green and yellow poison. But I think I need the salt and the henbane to turn someone into a mouse. This mouse will get the rest of my crystal bowl I think. And it will be repaired with the raisin. But how to get the ingredients ? I am stuck - unfortunately ;-