Worthy objects calling for a libation to be prepared (9)
I believe the answer is:
notabilia
'worthy objects' is the definition.
(collection of noteworthy objects)
'a libation to be prepared' is the wordplay.
'to be prepared' is an anagram indicator.
'a'+'libation'='alibation'
'alibation' anagrammed gives 'NOTABILIA'.
'calling for' acts as a link.
(Other definitions for notabilia that I've seen before include "Things worthy of attention" , "Remarkable things" , "Noteworthy sayings" , "objects worth attention" .)