I just noticed on the 360Flex Europe blog they’re giving away 1Gb usb drives to every attendee.
You can then hijack the speakers’ presentation files on the spot. This is a great idea as speakers often don’t get chance or time to send in their presentations and files for attendees to make use of. This is also a good promotional tool for any budding sponsor who can either advertise their logo on the USB drives or I’m sure if you ask nicely (in a sponsoring kind of way) they’ll let you put some promo software on the keys that are distributed if you drop them a nice email to inquire (sorry if that wasn’t the plan 360Flex guys).
If you’ve not got tickets yet go check it out http://www.360flex.com/360Flex_Europe.