Padlet Mini is easy and simple to use. Once you install it on your browser you can then easily bookmark websites with one click. Padlet Mini allows to either add the bookmarked website to an existing Padlet from your account or you can add it to a new padlet that you can create right from the extension.
http://www.educatorstechnology.com/2014/07/padlet-mini-new-tool-to-easily-bookmark.html