Install the minions package (and disable ace-popup-menu)

configuration.org

@@ -1456,6 +1456,14 @@ Unfortunately, this works only in a graphical mode.
   (setq-default sml/theme 'powerline))
 #+END_SRC
 
+*** Minions
+
+#+BEGIN_SRC emacs-lisp
+(use-package minions
+  :config
+  (minions-mode 1))
+#+END_SRC
+
 *** Spinner, e.g. to display running background tasks
 
 #+BEGIN_SRC emacs-lisp
@@ -1957,6 +1965,9 @@ INFO plist."
 
 #+BEGIN_SRC emacs-lisp
 (use-package ace-popup-menu
+  ;; Unfortunately, avy-menu (used by this package) is not compatible with minions.  I just
+  ;; disable it for now.
+  :disabled t
   :config
   (ace-popup-menu-mode 1))
 #+END_SRC

customizations.el

@@ -30,7 +30,6 @@
  '(package-selected-packages
    (quote
     (ace-mc
-     ace-popup-menu
      ace-window
      achievements
      ag
@@ -133,6 +132,7 @@
      mc-extras
      mediawiki
      meson-mode
+     minions
      multiple-cursors
      neotree
      ng2-mode