To find the wealth of scrapbooking freebies out there online, just do a simple Google search for 'free scrapbook graphics' or 'free clip art'. There are many other search terms to use that will reveal to you the different scrapbooking freebies you can find. You can get entire scrapbook themes with all of the free matching clip art, borders and fonts that you can use in just about any scrapbook.
Something to remember is to never use artwork unless you know it is in the public domain. Many popular images such as cartoon characters, logos, comic book characters, pictures of movie stars and signers are copyrighted. This means you could get into legal trouble by using such images without paying for them or getting permission.
Pixabay's description of themselves is pointed and very clear. No technical jargon or fancy words to let you know that they offer free images. Their website says "Finding free images of high quality is a tedious task - due to copyright issues, attribution requirements, or simply the lack of quality. This inspired us to create Pixabay - a repository for stunning public domain pictures. Your source for free vectors, free drawings and free photos. You can use any Pixabay image without attribution in digital and printed form, even for commercial applications."