Prepared to make a scene about the wallet (8)
I believe the answer is:
notecase
'the wallet' is the definition.
(synonyms)
'prepared to make a scene about' is the wordplay.
'prepared' indicates an anagram.
'make' indicates anagramming the letters.
'about' indicates putting letters inside.
'a'+'scene'='ascene'
'ascene' is an anagram of 'necase'.
'to' is an anagram of 'ot'.
'ot' put inside 'necase' is 'NOTECASE'.
(Other definitions for notecase that I've seen before include "Container for paper money" , "Wallet for folding money" , "used to carry money" , "carrier of cash" , "Wallet for paper money" .)