Well, it has been a few years since I last travelled to a programmers conference. Back then, the power brick for my laptop was as heavy as the whole laptop is nowadays. So, the laptop was about the only thing I took with me into the conference.
That means, I have no idea, if it makes sense to fill the space available in my bag with some other tools that might come in handy during a conference.
Are materials still handed out on CDs, so that I should bring the external drive for viewing stuff from other talks?
What tools are out there that might help during a presentation? (so far I have a bluetooth mouse for controlling powerpoint)