Since then I've switched to Fedora which doesn't package old X11 tools like xkbset. However, this is such a useful thing to have on a laptop I've found a way.
We'll need the xdotool package, so yum install xdotool.
Then under the settings of your Window Manager, simply create a shortcut to xdotool click 2.
Under the default Gnome 3 desktop, this is in the Keyboard page of gnome-control-center.
Under Openbox, we'd add an entry to rc.xml like this
<keybind key="Menu"> <action name="Execute"> <command>xdotool click 2</command> </action> </keybind>And we're done!
xdotool can actually do a whole heap more than just emulate keyboard and mouse events, check out the author's webpage for more info!