You can use the badge also as a rubber-like stamp. However, the printed logo is then a mirror-image. With PLA this does not work very well because the ink does not stick so well. Perhaps sanding the PLA would help.
Please note that the CC heart logo is copyrighted and trademarked by Creative Commons. Creative Commons provides a trademark policy: https://creativecommons.org/policies#trademark
I did license my work with the NC license element to reflect my believe that Creative Commons prohibits commercial exploitation of their trademarks without explicit permission. Specifically, the trademark policy says: “If you would like to use … CC trademarks on … merchandise … you must first receive permission from Creative Commons”.
The author remixed this model.