KDE System Tray Organizer

Kubuntu makes many modifications to various applications (e.g., Firefox, OpenOffice), so it is unlikely that there is an easy way to recreate the Kubuntu look on ArchLinux.

That being said, I moved from Kubuntu to ArchLinux and I now prefer the vanilla applications (e.g., OpenOffice looks much better).

One thing that helped a lot in synchronizing the look of gtk applications with KDE was to install qtcurve, a theme that works for both qt (KDE) and gtk (Gnome) apps.

pacman -S qtcurve-gtk2 qtcurve-kde4 gtk-chtheme
gtk-chtheme
# Change the theme for qtcurve

Old question but still needed. I've been using Plasma Customization Saver plasmoid and it seems to work ok.

From the plasmoid description:

This is a widget that allows you to save your current plasma customization and choose between all the customizations you saved to load them again.

Features: - Saving your current plasma customization (theme, window decoration, colors, icons, wallpapers, layout disposition, widgets etc...)

• Having multiple saved customization and easy switch between them.
• Save and restore your latte-dock customization per save
• It saves a screenshot of every customization so you can visually identified them.
• Explort and import customizations. For transfer to another computer or backup them.