was einfallen lassen

come up with something

→ etwas
phrase Rare #36,108
come up with something Usually used with a reflexive pronoun: sich etwas einfallen lassen. “Was” is an informal shortened form of “etwas.”
GE: Aber wegen der Lohnerhöhung müssen wir uns was einfallen lassen.
EN: But because of the pay raise, we’ll have to come up with something.

Wir müssen uns was einfallen lassen, sonst sterben die Menschen auf der Erde.

We need to come up with something, otherwise people on Earth will die.

— Interstellar (2014)

Aber wegen der Lohnerhöhung müssen wir uns was einfallen lassen.

But we’ll have to come up with something because of the pay raise.

— Ali: Fear Eats the Soul (1974)

Muss ich mir was einfallen lassen.

I'll have to think of something.

— Der Himmel über Berlin (1987)

Um sie loszuwerden, müssen wir uns was einfallen lassen.

To get rid of them, we need to come up with something.

— Parasite (2019)

Ich muss mir was einfallen lassen.

I need to come up with something.

— Die Royal Tenenbaums (2001)