Clothing/Shoes/Weather Gear: Beach stuff, such as swimming trunks (you will want to paddle when you see how clear the water is!), a towel, all that. It's the cote d'azur, man.
Photo Equipment: A camera?
Camping/Beach/Outdoor Gear: Bring flip-flops. The beach is not as stony as Nice, but it's not as sandy as Cannes neither. It is made up of fine stones which can be nice on the feet, but you may not like it all the time.