While we were out in New York last week, we popped along to the local branch, 826 NYC. The centre is fronted by the Brooklyn Superhero Supply Co., a shop that stocks everything the modern day super-hero could need, from capes to tins of anti-matter, from secret-identity kits to vacuum suction cups.
There's a capery, where you can try on your cape; and when you make a purchase, you must recite aloud the Vow of Heroism:
"I [your full name], also known as [your superhero name], promise always to use my superpowers for good. I promise that I will use the items I've purchased here today safely and in the name of justice. I promise to remain ever vigilant, ever true."