How to randomise my menu items.

So I thought I could do it like this (also I want to only get 3) –

$menu_items = wp_get_nav_menu_items(26);
$menu_items = array_rand($menu_items, 3);

foreach ( (array) $menu_items as $key => $menu_item ) {
    $title = $menu_item->title;
    echo $title;
}