Since I came back in the training business a year ago or so, I decided to drop the traditional slideware stuff * for a more 21st Century stylish method : use the Web 2.0 gear such as YouTube for tutorial videos, Picasa for real world photos, and more recently Facebook for post-training social and collaborative networking (note : all free apps, as I want to keep the learning materials costs as low as possible for the customers).
However, whilst going whole online digital is nice because it's hype, I still need a paper board to explain a lot of things, which a video clip will never replace (except perhaps those made by the folks at CommonCraft).
I love paperboards : it forces you to go crisp & clear, splitting your explanations into simple/one-page explanations - as Twitter forces you to write a message in less than 160 characters. Over the last 15 years that I was delivering training courses and sales seminars, I've collected lots of my paper rolls, for me to keep record of the interesting discussions with the attendees.
Of course, bringing a paperboard roll back home works fine when you travel by car, but it's a bit more tricky when you fly. Thanks to Apple, this issue is over. I now capture all the relevant stuff with my iPhone, and upload it on the MacBook right away. That makes the paperboard digital ;-)
* note : I'm thinking of using cartoons such as this one to explain and share complex stuff in the next future.