ha ha ha
Dude, gunslinger is right. Your best bet is to let her know about it because she will find out eventually and you may have more problems than where to hide your gear. I have so many buddies that try that shit and ALWAYS end up fighting with their wife because they find out. If she isn't cool with it you may have to make a decision, the gear or your wife.
I tell you this from experience, luckly for me my wife settled down and we discussed the situation and she was cool with it. I think it was more the fact that I hid it from her than the gear usage itself. Your call bro.