Tu/vuestra cosecha

Tu/vuestra cosecha
 

Dice un profesor a sus alumnos:
- Y para terminar me vais a hacer una frase de vuestra cosecha.
In English?
Of your own maybe?

Yes, simply 'of your own'.

I thought "off my own bat" too, but that means, "without being ask to", although it gives a similar idea, right?

I guess that would not work in the example, but something like "make up" or "come up with" a phrase would also be valid.

-And to end up, you are going to come up with a sentence of you own
-And to end up, you are going to come up with a sentence invented by you.

Would the second translation be valid as well?

Y poner una idea en comun? Tb con come up with no?