Everyone loves an awards ceremony, so why not set up an awards scheme for the contact centre?
You could even make it like the Oscars with a posh awards ceremony at a local hotel.
You can do awards for the best in customer service and get people in the contact centre to nominate each other. Nominating each other can become quite infectious and could create quite a buzz in the contact centre.
There are lots of companies that make plaques and cups to order. There are a number that produce gold Oscar lookalike trophies.
You could then do a montage of all the photos from the event.