Something I saw around the interwebs yesterday,

Use an Old Linux Computer to Put your Baby to Sleep

If you are not a computer geek, here is an explanation of how this very simple program works.

First the program will auto-eject the CD-ROM drive attached to the computer and will then close the tray. This will then happen over and over again until you stop it.

while [1 = 1]
 do
	#eject cdrom
	eject

	#pull cdrom tray back in
	eject -t
 done

This is the result…

The lazy person who thought this up, tied a piece of string between the CD-ROM drive tray and the baby car seat and as the tray would open and close, the smooth movements were enough to put his baby to sleep.