
1) Several hard copies of your resume. You never know if you will be meeting with extra people. Also, many hiring managers forget to print out your resume in advance. Having a clean copy shows you are prepared. Just make sure it's in the latest format.
2) Only one bag. This one is more for the ladies, but can apply to men as well. Don't drag in a big purse along with an even bigger computer bag. It looks cluttered. Select one simple bag that can neatly hold all your items. It should be sturdy and something you can easily slip on and off your shoulder so both your hands are free.