Fairground attraction doled out odd treasures (7)
I believe the answer is:
dodgems
'fairground attraction' is the definition.
(I've seen this before)
'out odd treasures' is the wordplay.
'out' indicates anagramming the letters.
'treasures' becomes 'gems' (gem is a kind of treasure).
'odd' anagrammed gives 'dod'.
'dod'+'gems'='DODGEMS'
'doled' acts as a link.
This may not be correct. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for dodgems that I've seen before include "fair source of revenue" , "Fairground attraction" , "Fairground cars" , "fair features" .)