Tea-related phrases

I am looking for the meanings and/or origins of the following:

Tea for two and two for tea

A spoonful of sugar helps the medicine go down

A tempest in a teapot

As useless as a chocolate teapot

Born with a silver spoon in his mouth

Fit to a T

Not for all the tea in China

Not my cup of tea

Suits you down to a tee

The cup that cheers

There's many a slip twixt cup and lip

Wake up and smell the coffee

It's not worth crying over spilt milk

"Tea for two and two for tea": Title of song popular in early 20th century.

"A spoonful of sugar helps the medicine go down": Song from the film "Mary Poppins," 1964.

"The cup that cheers but does not inebriate": Slogan promoting tea as an alternative to alcohol, mid-19th century; associated with the temperance movement.