Notice academic fellow's extra items (3-3)
I believe the answer is:
add-ons
'extra items' is the definition.
I know nothing about this answer so I can't tell whether this works.
'notice academic fellow's' is the wordplay.
'notice' becomes 'ad' (short for advert).
'academic fellow's' becomes 'dons' (both can mean an academic. I am not sure about the 'academic' bit.).
'ad'+'dons'='ADD-ONS'
Can you help me to learn more?
(Other definitions for add-ons that I've seen before include "Additions" , "Accessories" .)