MacBook and Openbox: mimic keyboard shortcut Cmd-tab application switcher

    <keybind key="W-Tab">
      <action name="NextWindow">
        <allDesktops>yes</allDesktops>
        <finalactions>
          <action name="Focus"/>
          <action name="Raise"/>
          <action name="Unshade"/>
        </finalactions>
      </action>
    </keybind>
    <keybind key="W-S-Tab">
      <action name="PreviousWindow">
        <finalactions>
          <action name="Focus"/>
          <action name="Raise"/>
          <action name="Unshade"/>
        </finalactions>
      </action>
    </keybind>

Macbook Air and Openbox: copy the Spotlight(TM) keyboard shortcut

    <keybind key="W-space">
      <action name="Execute">
        <command>dmenu_run</command>
      </action>
    </keybind>

apt-get install suckless-tools