3 hours on a bus!!! wow you DEFINITELY need something other than to sleep. I would definitely get my ipod and make sure it's charged. Listen a little and sleep , wake up and repeat. Music really makes a difference in travel time.
Ya i m also listen music in bus when i am traveling in a bus , listening is the one of the best alternative to spend a time in a bus
LOL i didnt know there are mp5's actually its the name of a weapon. but yeah i like listening to my mp3 - i prefer it than stupid conversations of other ppl