Symbaloo allows you to create a "dashboard" of links to sites that you want your students to easily be able to access. You can embed your webmix in your classroom site or give a link to it in your Google Classroom, where they can always go back to find your most commonly used sites. By giving your students this one "dashboard", you can give them a one-stop shop of sites that you can make changes to at any time without needing to give them a new link.