Emergency Fun Kit

Scenario 1:
You're on your way to another typical evening of bar hopping with friends when you get a call from a cute [insert *boy* or *girl*] inviting you to a spontaneous costume party. You have to be there in 20 minutes...

Scenario 2:
You just showed up to a BBQ and everyone is mildly entertained by the guy doing amateur magic tricks, but you wish you had something to make it a little more fun...