i just posted a list of all the stuff i fit into my tiny towers room last year in the accomodation thread... you dont need the crazy amount of stuff i brought... the essentials are:
summer clothing(for now anyway)
a fan
a doona, 2 sheets and a pillow are provided but you might want to bring your own..
a plate, cutlery bowl, whatever you feel is required for if you want to make a snack)
a stereo maybe
you dont HAVE to have a bar fridge (the common rooms have full sized ones but they tend to get raided) or computer (the 24hour computer lab is available for all students) or tv(common rooms have these also) but its up to you. basically you can bring anything you like to make yourself more comfy.. you can bring posters and pictures to stick up as well.