If an owner of copyrighted material earns money by selling copies of it (such as authorized stickers for which a licensing fee is paid), then making copies without paying a license fee is stealing value from the owner. I would rather just pay for a legitimate copy.
The DisneyClips.com puts a copyright notice on their material, which is ironic given their unauthorized use of the graphics which they have copied without permission themselves... this is from the DisneyClips.com page:
Disclaimer: Some logos and graphics on our web site are the trademarks or registered trademarks of their respective companies. They are provided as a convenience only for their lawful use. Any unauthorized use of these items by the purchaser shall be the sole responsibility of the purchaser. By purchasing these logos, you are indicating that you have authority and permission to use the logo or trademark.
If you are willing to use the DisneyClips.com images, why wouldn't you just copy any image you want from anywhere, and give it to a printer to make your unauthorized decal?