good, perfect, right, wonderful
a party with just the right mix of people

healthy, judicious
curious, odd, peculiar, strange
fascinating, interesting, intriguing
broad, rich
diverse, eclectic, vibrant
an eclectic mix of theatrical styles

cosmopolitan
complex
combustible, heady, potent, powerful, volatile
His art features a volatile mix of sexuality and violence.

cultural, ethnic, racial
marketing, product
brownie (esp. AmE), cake, muffin (esp. AmE), pancake
a packet of cake mix (BrE)
a box of cake mix (AmE)

concrete, mortar
potting, soil, soil-less (AmE)
Plant the seedlings in well-drained potting mix.

audio, mono, sound, stereo
The movie's sound mix is excellent.

contain, feature, have, include
offer
The new Oak Hill development offers a mix of housing.

create
They have created a unique mix of sounds.

vary
The precise mix will vary.

contain
The mix contains soil, peat, and sand.

mix of
The college has a broad mix of students.