Storage space for quiet pixie (5)
I believe the answer is:
shelf
'storage space' is the definition.
(I've seen this in another clue)
'quiet pixie' is the wordplay.
'quiet' becomes 'sh' (both can be said to tell someone to be quiet).
'pixie' becomes 'elf' (synonyms).
'sh'+'elf'='SHELF'
'for' is the link.
(Other definitions for shelf that I've seen before include "Flat surface for holding things" , "Flat surface for holding objects" , "Storage ledge" , "Horizontal surface to put things on" , "books supporter" .)