to put my money where my mouth is (sorry for another idiom), i volunteer to teach basic routing, but need folk to help organise, recruit, ... and i don't think it is the ncc's role this season, as folk are beating the ncc up over budget.
Need to think about it a bit more. Happy to help. And just to be clear i dont have anything against hands on stuff with pi-style hardware. We did a basic networking track at one of the German free software conferences once with hardware demos. That's pretty cool, but we should do something networking/Internet related rather than "build your own puzzle on a RPI". That may imply a more adult audience but I may underestimate people.
to really freak folk out the basic routing workshop o know, after being sure everyone knows what a prefix and mask are, does rip using slips of paper. [ i once tried to build simple routing in second life, but the so called programming language sucks caterpillar snot. ] randy