Some prohibited items that you may be planning to bring with you, or which you may forget to leave outside the exam room, include:
All types of food and drink (this includes gum, mints, etc.).
Your phone. You really should not bring your phone into the testing center at all. Just leave it in your car. If you are found to have it in the exam room during the exam, you will be disqualified. If you leave it outside the exam room, you may be unlucky enough to have it go missing, and you will probably worry about it during the exam. I know that some of you may want to listen to certain music, affirmation tracks, etc. before the exam. But if you choose to do so, you will have to face the chance of having it stolen. Although I think everyone is so afraid of incurring the wrath of bad bar exam karma, you could probably leave a rolex in the middle of the floor and have it be there when you walk back out of the exam.
Discs in your laptop disc drive. Make sure to check that your computer is ready to go the night before the exam. That includes emptying any discs, making sure the laptop is fully powered and you have your power cord. Also a back up battery if you have one.
BO or perfume. Please be freshly showered and wearing clean clothes. And please forgo your usual aftershave, perfume, or perfumed lotions. Be considerate of your fellow test-takers. This goes for smokers, too. Wash your hands, use a breath mint, wear clean clothes. No one wants to sit next to the chimney and have their stomach upset from those noxious odors. And don't forget about your choice in lunch - save the tuna fish sandwich with extra onions and garlic for another day. It's just not fair.