Tinker adjusted front of tatty small ornament (7)
I believe the answer is:
trinket
'small ornament' is the definition.
(I've seen this before)
'tinker adjusted front of tatty' is the wordplay.
'adjusted' indicates anagramming the letters.
'front of' indicates taking the first letters.
The first letter of 'tatty' is 't'.
'tinker' with letters rearranged gives 'trinke'.
'trinke'+'t'='TRINKET'
(Other definitions for trinket that I've seen before include "Charm" , "Gewgaw" , "Small piece of jewellery of little value" , "Bauble, geegaw" , "Small fancy article for knitter" .)