Alessandra,
You “hit the nail on the headâ€, service awards are always appreciated, especially when professionally produced and accompanied with a small gift or token of appreciation. Often board members like to receive a school logo item to use in their business, e.g. a coffee mug, sweat shirt, etc.; these also serve to reinforce their commitment and loyalty to the school and further enhances their pride in serving on the board.
I also liked your idea of a 'retreat' at the center which houses your culinary arts classes. Culinary students always put on a good show and who doesn't like good food? This also provides a great opportunity to showcase one of your programs and your student's work, which may lead to additional networking opportunities for them.
R. Roehrich