My advice - go to the very first conference you can wangle student attendance to get to in your chosen professional field. They hand out really groovy bags at ALL of them - I have 2 FANTASTIC satchels that have folder-sized spaces AND all the little pockets and zips for all the other sort of stuff you want to carry around. PLUS it's a conversation starter for any other students who've been to the conference as well.

GOOD LUCK on Monday!!!