When they bought their current house, my son told me that the house came with a shed and "Dad thinks it will be really cool to turn it into a bedroom for me. It will be my 'shedroom'." I put the kibosh on that fast. No 11 or 12 year old needs a separate apartment.
I've never been inside the house -- stepmonster will not allow it.
First of all do you call your ex's wife stepmonster in front of your son?? Second of all, I would NEVER let dh's ex in our house. I really don't see any reason for it. DH just said he would never let his ex in our house. Do you let the ex and his wife into yours? Sounds like you have a whole lot more problems here than just a hairdryer.
My husband's ex has been in my house several times and i have been in hers more times than i can count. Whats the big deal? She would come by to pick up DS and need to talk to us and she would come in and visa versa it seemed crappy to make her stand on the front porch to talk about an issue. I have dropped by her house to drop off a child support check because it was due in the middle of the week and knocked on her door and gave it too her. Usually one of her little ones were around and they would drag me in, or my stepson would be in his room so i would go in and say hi. Im not gonna lie, we DONT LIKE each other for the most part, but she appreciates me because i love love love her son and she tells me all the time and tells others. I think she is a loving mother, but just way to permissive. My stepson has been with us for about 2 yrs now and very rarely goes to visit, because of some issues, but i do try and encourage him to visit her sometimes if only for his siblings. She and I talk about once a week to keep her updated about him and she still pays his cellphone bill. It is such a shame people cant get along for the kids sake. Our motto is JUST FAKE IT lol. We have always faked it for Brad

Dont get me wrong we def fought over the yrs.... but we always made up.