Presents left in sock: girl's excited (8,7)

I believe the answer is:

stocking fillers

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'presents' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'left in sock girl's excited' is the wordplay.
'excited' indicates an anagram.
'left'+'in'+'sock'+'girls'='leftinsockgirls'
'leftinsockgirls' is an anagram of 'STOCKING FILLERS'.

Can you help me to learn more?

(Other definitions for stocking fillers that I've seen before include "ladies' legs?" , "presents?" , "Pins" , "Present items" .)

I've seen this clue in The Guardian.

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