Here’s a simple guide how to make a pretty real looking spider out of 5 dollar bills: 4 for the legs and 1 to wrap the body. The ending result picture looked pretty good to me actually and I believe the guy when he says this:
These things are really popular, but every once in a while you’re likely to have a bad reaction. (I once made one for a tip, and popped it up on the bar. When the girl turned around and saw it, for just that split second, it looked real. She let out a scream at the top of her lungs, and must have jumped three feet straight into the air. She was slightly arachniphobic. Oops.)
This is what you start off with:
And this is what you should get. Not bad, eh?