Hide away where half of us get new hats (5)
I believe the answer is:
stash
'hide away' is the definition.
(I've seen this before)
'half of us get new hats' is the wordplay.
'half of' means to take half the letters.
'get new' indicates an anagram (get a new order of the letters).
'us' halved is 's'.
'hats' with letters rearranged gives 'tash'.
's'+'tash'='STASH'
'where' is the link.
(Other definitions for stash that I've seen before include "Secret hoard" , "Cache" , "(Hidden store of) drugs" , "drug store" , "Squirrel away" .)