diff --git a/cookiecutter.json b/cookiecutter.json
index 05535d5..c47e6c8 100644
--- a/cookiecutter.json
+++ b/cookiecutter.json
@@ -11,6 +11,8 @@
     "flatpak_runtime": "org.freedesktop.Platform",
     "flatpak_runtime_version": "21.08",
     "flatpak_sdk": "org.freedesktop.Sdk",
+    "finish_args": "",
+    "modules_extra_content": "",
     "python_version": "3.X.0",
     "_extensions": [
         "briefcase.integrations.cookiecutter.PythonVersionExtension"
diff --git a/{{ cookiecutter.format }}/manifest.yml b/{{ cookiecutter.format }}/manifest.yml
index 32c5272..ad85785 100644
--- a/{{ cookiecutter.format }}/manifest.yml	
+++ b/{{ cookiecutter.format }}/manifest.yml	
@@ -8,24 +8,13 @@ cleanup:
   - /include
   - /share/man
 finish-args:
-  # X11 + XShm access
-  - --share=ipc
-  - --socket=x11
-  # Disable Wayland access
-  - --nosocket=wayland
-  # Network access
-  - --share=network
-  # GPU access
-  - --device=dri
-  # Sound access
-  - --socket=pulseaudio
-  # Host filesystem access
-  - --filesystem=xdg-cache
-  - --filesystem=xdg-config
-  - --filesystem=xdg-data
-  - --filesystem=xdg-documents
-  # DBus access
-  - --socket=session-bus
+{%- if cookiecutter.finish_args -%}
+  {%- for arg, enabled in cookiecutter.finish_args.items() -%}
+    {%- if enabled %}
+  - --{{ arg }}
+    {%- endif -%}
+  {%- endfor -%}
+{%- endif %}
 modules:
   - name: cpython
     buildsystem: simple
@@ -67,6 +56,7 @@ modules:
         - --share=network  # For downloaded requirements.
     build-commands:
       - /app/bin/python3 -m pip install --upgrade pip
+{{ cookiecutter.modules_extra_content }}
   - name: app_packages
     buildsystem: simple
     build-options: