I'm currently a student (in Holland), and I've been to a few recruitment fairs and if I were to get an email or see a flyer about another one I would probably not even read it. Most recruitment fairs are just terrible. Companies will send the prettiest girls they can find in their HR and PR departments with the sole goal of getting your contact info plus some buzzwords so they can add those to their database. Don't get me wrong, I have nothing against pretty girls, but they're not actually interested in me as a person nor do they have a lot of knowledge about the company which usually makes recruitment fairs a big waste of time.
On campus presentations on the other hand are a fantastic way of putting yourself on the radar. I don't mean the recruitment fairs that some Uni's will have on campus, but rather smaller events. I recently went to the final presentation of a phd project and there were 4-5 companies giving a short talk what they did in that field and afterwards they had stands with demos and the actual people who get their hands dirty were there to talk to you (extensively). To me the latter (where it's directly related to a topic I might be interested in) is much more interesting and inspiring than some impersonal recruitment fair.
On campus presentations on the other hand are a fantastic way of putting yourself on the radar. I don't mean the recruitment fairs that some Uni's will have on campus, but rather smaller events. I recently went to the final presentation of a phd project and there were 4-5 companies giving a short talk what they did in that field and afterwards they had stands with demos and the actual people who get their hands dirty were there to talk to you (extensively). To me the latter (where it's directly related to a topic I might be interested in) is much more interesting and inspiring than some impersonal recruitment fair.