Watch – Timepiece worn on the wrist. The watch that came to mind was of the analog (as opposed to digital) variety.
Record – A 33.33 rpm vinyl disc you play on a stereo.
Fox – I actually thought of an attractive woman as I read the list, but the primary meaning of the word in my mind is “a canine stereotypically red and sly”.
Field – An open area of grass, perhaps one on which baseball is played.
Blackberry – Similar reaction to that accompanying “fox” – I thought immediately of the communications device, but I’d normally envision the food.
Lead – The chemical element that’s in old paint and gasoline. If I had heard the word pronounced “leed”, I’d have thought of the starring role in a play.
Fire – Flames, either cozy ones at a campsite or a conflagration destroying a house.
Fork – An eating utensil with tines.
Fly – An insect that you try (generally futilely) to swat.
Post – To mail something.
Looking at your answers, I see we basically agreed on “watch”, “field”, “lead”, “fork”, and “post”, and (if my secondary reactions are considered) on “fox” and “blackberry” as well.
Before reading other replies, I’ll guess that the greatest variety of answers will accompany “post” – which can also mean a message to a newsgroup, a stick in the ground, a specific job, or (when capitalized) a last name or the title of a newspaper.