Independent blocking another newspaper displaying instrument (5)
I believe the answer is:
sitar
'instrument' is the definition.
(I know that sitar is a type of stringed instrument)
'independent blocking another newspaper' is the wordplay.
I cannot quite understand how this works, but
'independent' could be 'i' and 'i' is found within the answer.
'another' could be 'r' (I've seen this in other clues) and 'r' is found in the answer.
The remaining letters 'sta' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'displaying' acts as a link.
(Other definitions for sitar that I've seen before include "Hindu string instrument" , "Long necked and often plucked" , "Astir with Indian long-necked lute" , "instrument out east" , "Guitar-like instrument" .)