Area roughly inside toy container (3,5)
I believe the answer is:
tea caddy
'container' is the definition.
(tea caddy is a kind of container)
'area roughly inside toy' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'roughly' becomes 'ca'.
'inside' is an insertion indicator.
'toy' becomes 'teddy' (teddy is a kind of toy).
'a'+'ca'='aca'
'aca' placed within 'teddy' is 'TEA-CADDY'.
(Other definitions for tea caddy that I've seen before include "Container for Earl Grey etc" , "drink dispenser" , "Container for bags (or leaves)" , "source of refreshment?" , "leaves container in the kitchen" .)