Roadside display by Tinkerbell (4)
I believe the answer is:
kerb
'roadside' is the definition.
(I've seen this before)
'display by tinkerbell' is the wordplay.
'display by' indicates the answer is hidden within the clue (I've seen 'displayed by' mean this).
'KERB' is hidden in the letters of 'tinkerbell'.
(Other definitions for kerb that I've seen before include "Pancakes" , "stone by the way" , "on the borderline?" , "Pavement edge" , "Side of road" .)