It is almost trivially easy to write your own jQuery extensions. The trick is to know that jQuery.fn is the prototype object for all jQuery objects. If you add a function to this object, that function becomes a jQuery method

JQueryFn.js

jQuery.fn.println = function() {
 // Join all the arguments into a space-separated string
 var msg = Array.prototype.join.call(arguments, " ");
 // Loop through each element in the jQuery object
 this.each(function() {
 // For each one, append the string as plain text, then append a <br/>.
 jQuery(this).append(document.createTextNode(msg)).append("<br/>");
 });
 // Return the unmodified jQuery object for method chaining
 return this;
};

JQueryFnNamed.js

(function($) { // An anonymous function with one parameter named $
 // Put your plugin code here
}(jQuery)); // Invoke the function with the jQuery object as its argument