Figures of speech, tropes, call them what you will are the mainstay of many a good writer. There are figures based upon similarity like simile and metaphor. There are those based upon contrast like antithesis, and oxymoron. And then there are those based upon association like metonymy and synecdoche.

Here are some examples from famous campaigns:

Contradiction
JFM Radio Station. Annoy the neighbours. Turn it down.

Rhyme
For mash, get smash
Once you pop, you can't stop

Chiasmus -A verbal pattern (a type of antithesis) in which the second half of an expression is balanced against the first with the parts reversed.
'"I am stuck on Band-Aid, and Band-Aid's stuck on me."
(Band-Aid bandages)
"You like it. It likes you."
(Seven-Up soft drink)

Dehortatio - Dissuasive advice given with authority.
"Don't leave home without it."
(American Express)

Simile
"Sleeping on a Seely is like sleeping on a cloud."
(Seely mattresses)

Metaphor
If gas pains persist, try Volkswagen."
(Volkswagen automobiles)

Put a tiger in the tank

Onomatopoeia
Plop plop, fizz fizz, oh what a relief it is!"
(Alka-Seltzer)

Alliteration
"Make mine Miller."
'If anyone can, Canon can'

Diatyposis - Recommending useful precepts or advice to someone else.
Think small
(Miller beer)

Antithesis
"Melts in your mouth, not in your hand."
(M&Ms candy)

Pun
"When it rains, it pours."
(Morton salt)

Tricolon - A series of three parallel words, phrases, or clauses

"Grace . . . space . . . pace."
(Jaguar automobiles)

Proverbs and sayings
Good things come to those who wait
Head over Heals (Heals)

The wider point here is this: thinking figuratively isn't just for writers. It helps one to see things in a different way. Just as a periscope enables you to see over a wall, so a figure of speech can help you see over a creative obstacle in your path.