A bookmarklet that automatically fills form fields based on their names.
Inspired by (or stolen from) Adam Lichtenstein's article on CSS-Tricks
javascript:(function(){window.s195=document.createElement('script');window.s195.setAttribute('type','text/javascript');window.s195.setAttribute('src','https://raw.githubusercontent.com/batandwa/Prefill-Machine/master/prefill_machine.js');document.getElementsByTagName('body')[0].appendChild(window.s195);})();
Faker.js - A Javascript library that generates sample data.
...and other technicques mentioned in Adam Lichtenstein's article.