Supplier of material for writing home (3)
I believe the answer is:
pad
This clue might be a double definition.
'supplier of material' is the first definition.
'pad' can be an answer for 'material' (pad is a kind of material). I'm unsure of the 'supplier of' bit.
'writing home' is the second definition.
'pad' can be an answer for 'home' (pad can mean a person's home). I'm not sure about the 'writing' bit.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for pad that I've seen before include "Block of paper sheets" , "suitable for writers" , "Colloquial apartment or soft bundle" , "Sports guard; home (colloq.)" , "Walk softly on flat or bedsit" .)