Answer:

slogans

Answer	Crossword Clue
SLOGANS	Business lines?
SLOGANS	Ad staples
SLOGANS	Madison Avenue creations

SLOGANS	"Just do it" and "Just say no"
SLOGANS	Politicians often repeat them
SLOGANS	Spot finishers, often
SLOGANS	"Be all that you can be," etc.
SLOGANS	Mottos
SLOGANS	Catchphrases
SLOGANS	Advertising catchphrases
SLOGANS	Rallying cries.

SLOGANS	Adman's specialties.
SLOGANS	Catchwords.
SLOGANS	Catchy phrases.
SLOGANS	Adman's creations.
SLOGANS	Advertising gimmicks.
SLOGANS	Motto's cousins.
SLOGANS	Catchwords
SLOGANS	Shibboleths

SLOGANS	Rallying cries
SLOGANS	Campaign poster inscriptions
SLOGANS	Some trademarks
SLOGANS	Words to live by
SLOGANS	Advertisers' output
SLOGANS	T-shirt words, perhaps
SLOGANS	"Be all that you can be" and others
SLOGANS	Madison Ave. creations

SLOGANS	Ad agency output