For this cycle? All you really need is a good internet connection...
Joking, of course. If you're interviewing in person, bringing a padfolio is a good idea. Just be sure to include documents that can't be found in your application. I talked to a dental student who brought pictures of all the fishing flies they had tied, which helped demonstrate their manual dexterity skills. Just bring anything to make you stand out, really.
I don't see anything wrong with carrying a purse either, so long as it goes with your outfit and adds to your professionalism. But I'm a guy, so I'm no expert in that department.