Packages with the icons use flag

app-text / xpdf : The PDF viewer and tools

  • Generate desktop PNG icons using media-gfx/inkscape

gui-apps / mako : A lightweight notification daemon for Wayland. Works on Sway.

  • Enable support for icons

x11-misc / openbox-menu : Another dynamic menu generator for Openbox

  • Enable support for icons in menus

x11-themes / gentoo-artwork : A collection of miscellaneous Gentoo Linux logos and artwork

  • Install icons

x11-themes / redhat-artwork : RedHat's Bluecurve theme for GTK2, KDE, GDM, Metacity and Nautilus

  • Install Bluecurve icons