We donate gift cards to charitable organizations to be raffled by the organization. The winner then receives a service from us, no cash exchanged, how do I record in QB?

We have gift cards that can be purchased so that an individual can get a service from us. Occasionally we will contribute one of these gift cards to a charitable organization for them to raffle off. We do not receive, no give any cash. How would I record the transaction in QB when the gift card is redeemed?