Please give me advice
Me (30M) and my wife (29F) started playing with chastity (my idea to try it) and we have a habit, she says a concrete word (or usually send a message) and i have to put on the cage. Usually on weekends so i can spend the whole day in it. But my wife really vanilla. So in the evening after i made her happy, she just unlocks it and return the favor. I would like to make the evening a little more spicy (not too much, not to "scare" her or something). I thought maybe freeze the keys into an ice cube (since the keys usually in stays the whole day in the bedside table) so when she gets to the point to unlock me she can't. But i don't have any other idea, i don't have much experience. Please give me some advice. (Yeah talk to her i know, but even i don't know what to expect)