Hi all, I've put a few of the ideas on a panel - both on a light theme, and on a dark one. Also without any icon background, and on the blue rectangle.
It also has the current KDE logo for reference. https://share.kde.org/index.php/s/b9sMKE3Nl9whJiQ I'm a bit sad to say that I don't really find any of these fitting as a launcher icon. Cheers, Ivan p.s. If somebody wants to play around, I can post the svg as well.
