Hamper for when royalty's aboard punt (6)

I believe the answer is:

basket

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'hamper' is the definition.
(I've seen this before)

'when royalty's aboard punt' is the wordplay.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'royalty's' becomes 'k' (I can't explain this - if you can you should believe this answer much more).
'aboard' means one lot of letters goes inside another.
'punt' becomes 'bet' (I've seen this in other clues).
'as'+'k'='ask'
'ask' put inside 'bet' is 'BASKET'.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for basket that I've seen before include "Container for shopping" , "it contains" , "Container made of interwoven wire or canes" , "Shopper may have this" , "Shopping holder" .)

I've seen this clue in The Guardian.

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