Collects spare change? (5)
I believe the answer is:
reaps
'collects' is the definition.
(reaping is a kind of collecting)
'spare change?' is the wordplay.
'change?' indicates anagramming the letters (I've seen 'change' mean this).
'spare' with letters rearranged gives 'REAPS'.
(Other definitions for reaps that I've seen before include "crops" , "Gleans or harvests" , "Harvests (a crop)" , "Cuts, gathers grain" , "Harvests with strange spear" .)