This is how the oranges are fixed to create the displays. You can just see the wire netting which has already been fixed to a massive iron framework.
The flecks of white on the oranges are bits of Silly String. This photograph was part of a float taken at the Corso (procession of floats) where the kids have the best time squirting it at each other and at the floats. After last year's parade, I read in Nice-Matin that this wasn't going to be allowed in future as it makes so much mess in the streets but that directive obviously never happened. Click HERE to see the mess last year.
On the left you see the display representing Polka - Russian dolls and a balaleika.