6. Electronics
Unless no one told you this before, you should NEVER under no circumstances have electronics in your bathroom, especially when it comes to non-water-resistant electronics and cables. If you have a radio specially made for the shower then that’s fine, but other than that stay away from electronics when you’re in your bathroom.
Apart from safety reasons, they can also be ruined by the humidity, making them break far quicker than they would normally. So, next time you use your electric hairbrush, make sure you store it in your bedroom.