We use this expression to say that we will find a solution in the future.
You can use this phrase in ………… language.
A: What are you going to say to the manager when he finds out the contract has been cancelled?
B: I don’t know now. I’ll come up with something. Don’t worry.
A: I need an idea for tomorrow’s lesson.
B: OK, I’m sure we can come up with something. Let’s google something.