Bulb

Bulb

OVO

Octopus

Starfish (other energy companies are boring, let’s do association)

As a note, the OP’s post had a referral link, hence the edit

Crab

Claw

Hammer

Time!

Clocks

signal box

lever

escapement

Pocket watch

Trench

Digger

Trench
OK I'm confused. Am I missing a really obvious link here or is it a little more tenuous?

Pocket watches were used in the Trenches during WW1 but found to be awkward to use so they developed the Trench watch which could be worn on the wrist, it was a smaller version of the pocket watch and this later led to the development of the wrist watch.

They are lovely watches normally solid silver, below is one of two I have (C 1920s):

Trench watch as used in the trenches by soldiers in WW1, this was where the wrist watch was derived from. Lovely watches usually solid silver. The Trench watch was derived from the pocket watch, a scaled down version but worn on the wrist.
Below is 1 of the 2 that I have.

Lovely item. I wonder why some timepieces have IIII rather than IV.

Foot

There is no definitive answer but I reckon it is to do with symmetry, to balance the VIII (8)

Metre

Squirrel

Wolfram Alpha