Mix with lots around one's cubicle (10)
I believe the answer is:
miscellany
'mix' is the definition.
(thesaurus)
'lots around one's cubicle' is the wordplay.
'lots' becomes 'many' (many means lots of something).
'around' is an insertion indicator.
'one's' becomes 'i's' (Roman numeral).
'cubicle' becomes 'cell' (synonyms).
'is'+'cell'='iscell'
'many' placed around 'iscell' is 'MISCELLANY'.
'with' is the link.
(Other definitions for miscellany that I've seen before include "Mixture" , "anthology" , "varied group" , "potpourri" , "Hotch-potch" .)