Dru

I have the same dilemma; those darned old lectures just go on and on don't they? I usually pack some beef jerky, pork rinds and string cheese to take with me. I make my own homemade beef jerky b/c a lot of the premade stuff is kinda carby but you CAN find some that isn't too bad or you can pick up a food dehydrator pretty cheap and make your own!
You can also get one of those 'cold packs' (the little thing you freeze) to put in a bag and pack along some meat roll-ups!! LCing in a pinch brings out the creativity in a person Let your creative side loose!!

Hope all goes well with you!!