Added some more hooks and custom css

wagtailvideos/static/wagtailvideos/css/summary-override.css

+section.summary > .stats {
+    display: grid !important;
+    grid-template-columns: repeat(4, 1fr);
+}
+
+section.summary > .stats::before {
+    display: none !important;
+}
+
+section.summary > .stats > li {
+    display: flex !important;
+}
+
+@media only screen and (max-width: 50em) {
+    section.summary > .stats {
+       grid-template-columns: repeat(2, 1fr);
+    }   
+}
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wagtailvideos/templates/wagtailvideos/homepage/videos_summary.html

+{% load i18n wagtailadmin_tags %}
+
+<li class="icon icon-media">
+    <a href="{% url 'wagtailvideos:index' %}">
+    {% blocktrans count counter=total_videos with total_videos|intcomma as total %}
+        <span>{{ total }}</span> Video <span class="visuallyhidden">created in {{ site_name }}</span>
+    {% plural %}
+        <span>{{ total }}</span> Videos <span class="visuallyhidden">created in {{ site_name }}</span>
+    {% endblocktrans %}
+    </a>
+</li>
\ No newline at end of file

wagtailvideos/wagtail_hooks.py

@@ -3,10 +3,16 @@ from django.urls import reverse
 from django.utils.html import format_html
 from django.utils.translation import ugettext_lazy as _
 from wagtail.admin.menu import MenuItem
+from wagtail.admin.search import SearchArea
+from wagtail.admin.site_summary import SummaryItem
 from wagtail.core import hooks
-
+from django.utils.html import format_html
+from django.templatetags.static import static
 from wagtailvideos import urls
 from wagtailvideos.forms import GroupVideoPermissionFormSet
+from wagtailvideos.models import Video
+
+from .permissions import permission_policy
 
 
 @hooks.register('register_admin_urls')
@@ -39,3 +45,46 @@ def register_images_menu_item():
         _('Videos'), reverse('wagtailvideos:index'),
         name='videos', classnames='icon icon-media', order=300
     )
+
+
+
+class VideoSummaryItem(SummaryItem):
+    order = 300
+    template = "wagtailvideos/homepage/videos_summary.html"
+
+    def get_context(self):
+        return {
+            "total_videos": Video.objects.count(),
+        }
+
+    def is_shown(self):
+        return permission_policy.user_has_any_permission(
+            self.request.user, ["add", "change", "delete"]
+        )
+
+
+@hooks.register("construct_homepage_summary_items")
+def add_media_summary_item(request, items):
+    items.append(VideoSummaryItem(request))
+
+
+class VideoSearchArea(SearchArea):
+    def is_shown(self, request):
+        return permission_policy.user_has_any_permission(
+            request.user, ["add", "change", "delete"]
+        )
+
+
+@hooks.register("register_admin_search_area")
+def register_media_search_area():
+    return VideoSearchArea(
+        _("Video"),
+        reverse("wagtailvideos:index"),
+        name="video",
+        classnames="icon icon-media",
+        order=400,
+    )
+
+@hooks.register('insert_global_admin_css')
+def summary_css():
+    return format_html('<link rel="stylesheet" href="{}">', static('wagtailvideos/css/summary-override.css'))