Bookmarklets I've made the scratch pad is from https://coderwall.com/p/lhsrcq

HTML5 Scratch Pad

javascript:(function(){window.open('data:text/html,%20<html%20contenteditable>');})();

Random Email

javascript:(function(){document.querySelectorAll('input[type=email]')[0].value=Date.now()+'@example.com';})()

Reveal Passwords

javascript:(function%20()%20{var%20inputs%20=%20document.querySelectorAll('input[type=password]');for(var%20i=0;i<inputs.length;i++)%20{inputs[i].setAttribute('type',%20'text');}})();