If you are looking to save someone's padlet, you're in luck! All you need to do is bookmark the padlet, and you can keep it forever.
When you have found a padlet you would like to save, click the three dot ellipsis button (...) in the action bar. When the menu opens, click Add bookmark.
You can also bookmark padlets from your dashboard by clicking the vertical three dot ellipsis button (...) on the padlet and then clicking "Add bookmark."
Once the padlet is bookmarked, you will be able to find it in your Bookmarks tab from the main dashboard.