How many kids does the goddes nyx have?

Nyx had quite a few children, both with Erebus and Uranus and by parthenogenesis. They were:

With Erebus:

Aether and Hemera (light and day)

Charon the Ferryman

Epiphron (prudence)

Hypnos (sleep)

Moros (doom)

Nemesis (retribution)

Thanatos (death)

With Uranus:

Lyssa (madness)

Alone:

Achlys (the shroud of death)

Apate (Deceit)

Eris (strife - sometimes said to be a daughter of Ares)

Erinyes (the furies)

Geras (age)

Hesperides (sunset)

Keres (death spirits)

Momus (mockery)

Oizys (misery)

Oneroi (dreams)

Phanes (procreation - with Eros in some myths)

Philotes (friendship)

Moirae (fates - with Zeus by some accounts)