Took a seat for a conversation piece (3)
I believe the answer is:
sat
'took a seat' is the definition.
(I've seen this before)
'for a conversation piece' is the wordplay.
'piece' indicates the answer is hidden within the clue.
'SAT' is hidden within 'for conversation'.
(Other definitions for sat that I've seen before include "Was sitting" , "part of the weekend" , "Rested" , "Was in session" , "Perched" .)