Some of the things ive tried: coffee, no-doz, hydroxycut (sold in gnc stores), exercising... Basically anything that gets your heat rate up and/or helps you focus. Be careful with the Hydroxycut though, that stuff is like legal cocaine.
I don't really do anything. I'm good at staying up really late :) one time at a lock-in, I only laid down once to get a little rest. Didn't even go to sleep. Unfortunately, I slept the rest of the day lol! :)