Is he photosensitive? If not, I found this amazing game. It is like DDR (the dancing game) except it is with a guitar! I kid you not, I stayed up for hours on end trying to master this game!

Other things I've done was keep music loud on my ipod so I couldn't fall asleep, and if you have a 24 hour store - go shopping. It's almost impossible to fall asleep while shopping!

I assume he's not allowed to eat or drink, right?

It's hard to say what to do since so many people tend to have various interests.

Anyway, best of luck for the test and I hope it all turns out well!