Prop for Willy Wonka (4)
I believe the answer is:
cane
'prop for willy wonka' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cane that I've seen before include "African country formerly called Gold Coast" , "Punish; woody stem" , "Kind of sugar?" , "A slender rod, perhaps for punishment" , "Stem of palm" .)