
There are lots of interesting ideas out there, one being the French tradition to give 5 dragées (pronounced dra-ZHAY ), whole almonds coated with a sugar shell in various colors, to each guest at their wedding. The five symbolises Health, Wealth, Happiness, Longevity, and Fertility.

Another idea, but not necessarily a tradition but still very French, is to have a box of mini macaroons at each table setting. Some of the best are made by Laduree and I can personal vouch for how lovely and yummy they are!
Also anything that is a local product to the Cote d'Azur would be appropriate.