Last bit of stuff in a locker (5)
I believe the answer is:
final
'last' is the definition.
(I know that last can be written as final)
'bit of stuff in a locker' is the wordplay.
'bit of' indicates the answer is hidden within the clue.
'FINAL' is hidden within 'stuff in a locker'.
(Other definitions for final that I've seen before include "Coming at the end" , "Last in a series of games or contests" , "The last exam or leg of competition" , "big match" , "Like one's journey to cemetery" .)