Quiet pixie gets storage space (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'
'gets' acts as a link.
(Other definitions for shelf that I've seen before include "Protruding rock ledge" , "Rock ledge; underwater bank" , "Wall fitting for books, etc" , "Horizontal surface for holding objects" , "Place for book -- or old spinster?" .)