(defvar me/hidden-mode-line-format nil)

(defun me/hide-graphical-elements ()
  (interactive)
  (tool-bar-mode -1)
  (menu-bar-mode -1)
  (scroll-bar-mode -1)
  (setq me/hidden-mode-line-format mode-line-format)
  (setq mode-line-format nil))

(defun me/show-graphical-elements ()
  (interactive)
  (tool-bar-mode 1)
  (menu-bar-mode 1)
  (scroll-bar-mode 1)
  (setq mode-line-format me/hidden-mode-line-format))