Thoughts I had on commencing Easter (5)

I believe the answer is:

ideas

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'thoughts' is the definition.
(I know this)

'i had on commencing easter' is the wordplay.
'i had' becomes 'I'd' (contraction).
'on' is a charade indicator (letters next to each other).
'commencing easter' becomes 'eas' (I can't justify this - if you can you should give a lot more credence to this answer).
'id'+'eas'='IDEAS'

Can you help me to learn more?

(Other definitions for ideas that I've seen before include "Notions, thoughts" , "Thoughts, concepts" , "Thoughts from Sadie" , "Fancies" , "Notions, concepts" .)

I've seen this clue in the Evening Standard.

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