That’s an understandable concern, I getcha, finding a hiding space for your personal items can be challenging. I’ve never had to share a room so I assume that adds another layer of possible dong discovery.
I just hide my shit under my bed in a box and if someone finds it well, then that’s just the way it is, whoops.
But yo it’s okay anon, you can buy a dong when you feel comfortable enough to. (Or horny enough, whichever comes first lmao)
Try your underwear drawer. Nobody but you should be looking in your underwear drawer.