I came across this pillow at Home Center. Its called the Sound Asleep pillow and has built-in speakers. You can plug your ipod or other music player to this before going to sleep!

I know of a few people who only get sleep when music is playing in the background. But the way I see it, this pillow would be even better for pranks. Imagine playing a loud snoring sound on those speakers :) Or even better playing ghostly tunes. ;)