I don't masturbate any more since I promised my wife I wouldn't. I used to masturbate quite frequently but I thought it got in the way of pleasing my wife appropriately. I once broached the subject of a chastity cage, but she didn't want anything to do with it.
I've come to learn the constant horniness is almost more intoxicating than ejaculating. I had a recent conversation with her about teasing me and she's agreed to amp up the teasing. There is a certain amount of frustration that goes along with being teased but the thought of it just makes me even hornier. I've often offered to satisfy her orally without asking for reciprocation, but so far she hasn't taken me up on my offer.