Container used by witches today (5)
I believe the answer is:
chest
'container' is the definition.
(chest is a kind of container)
'used by witches today' is the wordplay.
'used by' indicates the answer is hidden within the clue.
'CHEST' is hidden in the letters of 'witches today'.
(Other definitions for chest that I've seen before include "Upper trunk" , "Bust" , "It's enclosed by the ribs" , "Large, sturdy box with a lid" , "ark" .)