In reply to ti_pin_man:
The campsite La Musardiere near Milly La Foret rents out pads, and it's very near Gorge Aux Chats and the rest of Trois Pignons.
Also the climbing shop on Fontainebleau S'cape rents out pads. Pretty good shop too.
I'm out here at the moment my mobile on a circuit at Gorge Aux Chats. Enjoy when you get out here!