You'll need some sort of oxygen mask with a tube, just mask sure there are enough air hole in the mask since you will be plugging up the tube.
One EL Wire dog leash, or you can purchase EL Wire from http://thatscoolwire.com/
along with a battery pack.
marker (if you want)
ruler or tape measure (if you want)
hot glue gun
also you will need some epoxy with / instead of the hot glue (edit)
Now if you couldn't find the dog leash el wire you will need to contruct your own el wire with battery pack set up, but you should be able to find the dog leach for under $20.
One important note make sure the el wire is as long or shorter than the tube because its alot easier to cut the tube.