Temporary accommodation had scrap strewn about (8)

I believe the answer is:

crashpad

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'scrap strewn about' is the definition.
I can't tell whether this definition defines the answer.

'temporary accommodation' is the wordplay.
'temporary' becomes 'crash' (I can't explain this - if you can you should give a lot more credence to this answer).
'accommodation' becomes 'pad' (I've seen this in other clues).
'crash'+'pad'='CRASHPAD'

'had' acts as a link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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