think up
think of ****
dream up
hatch **
concoct

I could think up games for hours at a time.

Before they could think up a good answer, I was inside.

Well, so let me think up for myself what I want in order to be happy.

We'd like to think up some new little thing of our own.

Like you were saying, we just have to think up the right questions.

They were gone before I could think up a good answer.

And the line of approach I've thought up is quite good.

But he would think up another game the next time.

She can think up her questions as we go along.

You'll have a few weeks to think up a better story.