Still taking days returning toy (5)
I believe the answer is:
teddy
'toy' is the definition.
(teddy is a kind of toy)
'still taking days returning' is the wordplay.
'still' becomes 'yet' (yet can mean still or so far).
'taking' is an insertion indicator.
'days' becomes 'dd' (an abbreviation for day written twice).
'returning' shows that the letters should be reversed in order.
'yet' going around 'dd' is 'yddet'.
'yddet' in reverse letter order is 'TEDDY'.
(Other definitions for teddy that I've seen before include "Stuffed toy" , "Child's soft toy" , "Bear - boy" , "plaything" , "Type of bear" .)