It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Here are a few places to find materials that have Creative Commons licenses that you can then share, reuse and remix.
NOTE: Not every single thing created or found on these sites will have a Creative Commons License. So look the item over carefully before using. If it does not have a visible, Creative Commons License, it may not be open to use. You can ask your friendly librarians if you are unsure.