Decorate the table with small pots of a variety of herbs from your local garden store.
Inexpensive local dry white table wine.
A sprig of mint.
A roasted chicken.
A bouquet of flowers.
A scoop of ice-cream.
It is always less expensive to decorate with flowers in season. And it is usually less expensive to do bouquets of all one type of flower.
Brightly colored Japanese lanterns.