Drugs,
LOTS of drugs.

CAUTION! an EMT is not likely to be on board, so if you don't know what you're doing, you're likely to freak some people out, or die in the process of doing so.

Personally I've found ketamine to be the most pleasing, as it is a tranquilizer. However if you are daring and DO like hallucinogens, mescaline or LSD work pretty well. Think pretty flashing lights...

I would not suggest ecstasy, however; imagine the situation:

you press the flight attendant button...
*twiddle* *twiddle* *twiddle*
you: Excuse me Ma'am? Umm... (long pause) What's your name?
flight attendant: Linda... how may I help you, sir?
you: Umm... can I get a glass of water?
linda: sure! one moment
you: wait! Umm... do you want to give me a massage?
linda gives you a weird look.
you: wait, no... hold on... umm...
you pull some photon lights out of your pocket.
you: here, umm..
linda happens to be a raver chick so she understands your predicament.
linda: You want a light show, don't you?
you nod.
however linda isn't stupid.
linda: what do you think this is southwest?