There will be no intercourse for him, of course, so long as he's locked up, but that doesn't mean you have to go without. This is your opportunity to teach him how to please you orally; as often and for as long as you like. He will get to a point when your orgasms will actually be more important to him than his own. At that point, you can pretty much leave the cage off and only use it for grins and giggles or as punishment for bad behavior.
Kind regards, Isabella