All of my past & future contributions to LibreOffice may be licensed under the MPLv2/LGPLv3+ dual license.
If in the future I submit artwork, additionally, to the extent possible under law, I waive all copyright and related or neighboring rights to my past & future Artwork and Design contributions to the LibreOffice project, and similarly to The Document Foundation, placing such contributions under CC0: https://creativecommons.or/publicdomain/zero/1.0