Expensive present from client

I've just finished opening our client Christmas cards to find a £200 "experience voucher" tucked into the card. Don't get me wrong, it's nice to be appreciated and I don't have a problem with the odd home made cake, box of chocolates, piece of child art or bunch of flowers arriving in the office.

However, I feel that a £200 voucher is just too expensive and even if I wanted to keep it, there is no sensible way to share the voucher over a service team of three .

Any ideas about a tactful way to return this to the customer? And would it be appropriate to make a small appreciative gesture to the other service team members myself ?