K.H.
One of my friends had a special Valentine's dinner with the whole family. The had candles, ate on china and had sparkling cider in wine glasses. The kids thought it was really cool!
You could also make themed meals. You could have red fruit with heart shaped sandwiches. For dessert you could decorate sugar cookies.
How old are you kids? It depends on their ages what types of things I'd suggest for the jackpot.