Starting again after a project cycle has finished?

Hi Trello enthusiasts,

I have just completed a project cycle (an annual event) for the first time with a Trello board.  Yay!  The team loved how Trello kept everything together.

Now, I want to clear or archive the board of everything related to the last event, but need to keep the things we will need for next time.

Is there an easy way to do this?

I was thinking maybe copy the board, get rid of old stuff on the copied board and archive the old board?  Any other tips?

Thanks, Kylie