Nuts as items on Christmas table (8)
I believe the answer is:
crackers
'nuts' is the definition.
(both can informally mean mad)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for crackers that I've seen before include "Not being sensible" , "Crazy types" , "and some others touched" , "Crazy (colloq.); biscuits" , "Christmas items" .)