Gets eager, excited, for seasonal treat (6,3)
I believe the answer is:
easter egg
'seasonal treat' is the definition.
(I've seen this before)
'gets eager excited' is the wordplay.
'excited' is an anagram indicator.
'gets'+'eager'='getseager'
'getseager' with letters rearranged gives 'EASTER-EGG'.
'for' acts as a link.
(Other definitions for easter egg that I've seen before include "Seasonal present" , "Edible seasonal symbol" , "DVD feature?" , "Segregate from traditional chocolate ovum" , "DVD bonus" .)