Clobber kept in storage area (4)
I believe the answer is:
gear
'clobber' is the definition.
(I've seen this before)
'in storage area' is the wordplay.
'in' indicates the answer is hidden within the clue.
'GEAR' is hidden within 'storage area'.
'kept' acts as a link.
(Other definitions for gear that I've seen before include "often changed in a saloon" , "Equipment; dress" , "Equipment, clothing, goods" , "Informal clothes seen in rage" , "Toothed wheel mechanism" .)