Trendy place making contribution (5)
I believe the answer is:
input
'contribution' is the definition.
(input means someone's contribution to something)
'trendy place' is the wordplay.
'trendy' becomes 'in' ('in' can mean fashionable).
'place' becomes 'put' (synonyms).
'in'+'put'='INPUT'
'making' acts as a link.
(Other definitions for input that I've seen before include "Data entered to computer" , "Provision of data" , "Contribution - data fed to computer" , "data-feed" , "Data entry" .)