Gift for people after the party (8)
I believe the answer is:
donation
'gift' is the definition.
(donation is a kind of gift)
'people after the party' is the wordplay.
'people' becomes 'nation'.
'after' means one lot of letters go next to another.
'the party' becomes 'do' (do is a kind of party).
'nation' put after 'do' is 'DONATION'.
'for' acts as a link.
(Other definitions for donation that I've seen before include "Money given to charity" , "Do anoint by way of a gift" , "Gift or contribution" , "present" , "presentation" .)