It really depends on the place. The one I go to allows shoelaces and belts and stuff but I've been in some that don't allow strings or jewelry of any kind. Most places will not allow you to keep things with alcohol in them in your room but will have a sharps closet that you can access at certain times. Most hair conditioner has alcohol. I've never been in one that allows electronics as an adult.

Your car should be fine but if you are concerned I would get a ride in. I've always had to go through the crisis center so I've always been taken by ambulance.

Good luck! I hope they can help you.