That is why I always carry my Moleskine everywhere I go!
I actually never really forgot any of my creative ideas thankfully. Usually it would stick in my head to the point I would develop it even if I had nothing on me- to the point I could just sketch it out freely when I got back from wherever.
Ah yes those were the days, unfortunately the college went and changed how our CCS lectures are taught so if you don't attend, pay attention and take notes your buggered . Nice reminder of the good ole days though, great work nice and clean presentation.