Cheap ornament is cool to hang (9)
I believe the answer is:
fandangle
'cheap ornament' is the definition.
'fandangle' can be an answer for 'ornament' (I have seen 'Useless ornament' mean 'fandangle' so perhaps 'ornament' could also mean 'fandangle'). I am unsure of the 'cheap' bit.
'cool to hang' is the wordplay.
'cool' becomes 'fan' (I've seen this in other clues).
'to hang' becomes 'dangle' (dangling is a kind of hanging).
'fan'+'dangle'='FANDANGLE'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for fandangle that I've seen before include "Useless ornament" , "Nonsense" .)