Regularly engage Charlie up here with small container (6)

I believe the answer is:

eggcup

I'm a little stuck... Click here to teach me more about this clue!

'here with small container' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'regularly engage charlie up' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'charlie' becomes 'c' (phonetic alphabet: alpha, bravo, charlie etc.).
The alternate letters of 'engage' are 'egg'.
'egg'+'c'+'up'='EGGCUP'

Can you help me to learn more?

(Other definitions for eggcup that I've seen before include "Holder of an oval thing" , "what held a problem for curate?" , "Bearer of breakfast (with soldiers)" , "Breakfast placed here" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.