I'm torn between 3 options.
1) A shadow. Just a shadow. Imagine this. Wearing a black morph suit, I follow people around, copying their every move. F'loop that! That oughta be on Youtube. I guarantee 2000 views.
2) Homemade costume. I will wear a brown bag mask while wearing a sign saying "This is a costume!" on the front and on the back, it says, "Quit staring." Points for originality! :D
3) Wear both. Make sense, but would overpower the shadow idea.
What do you think?