diff --git a/inventory-sample.yml b/inventory-sample.yml
index e12857e..f4140e3 100644
--- a/inventory-sample.yml
+++ b/inventory-sample.yml
@@ -105,10 +105,49 @@ all:
     localhost:
       ansible_connection: local
 
+infrastructure:
+  hosts:
+    wireguard_server:
+      ansible_host: wg.example.com
+    radius_server:
+      ansible_host: radius.example.com
+
+# PC-Rooms
+R016:
+  hosts:
+    r016pc[01:30]
+    # Set primary screen on teacher-pc to HDMI-A-1
+    # and sound output to analog-stereo
+    r016pc80:
+      dual_screen: [HDMI-3, HDMI-A-1]
+      audio_output: [pci-0000_00_1b.0, analog-stereo]
+
+
+R115:
+  hosts:
+    r115pc[01:25]
+
+PCroom:
+  children:
+    R016:
+    R115:
+    R117:
+  vars:
+    sudo_permissions:
+      "%role-teacher":
+        - /usr/bin/journalctl --since today
+    exam_destination_allowed_ipv4:
+      - 10.1.1.0/24
+      - 10.1.2.0/24
+      - 10.1.4.0/24
+      - 192.168.122.0/24
+
+# Laptops
 laptops:
   children:
     teacherlaptop: # teacherlaptops will get laptop vars too
   hosts:
+    nb[001:999]:
   vars:
     ## Activate WLAN and select authentication mode (see: doc/wlan.md)
     wlan: psk # (none|psk|eap-tls)
@@ -120,8 +159,10 @@ laptops:
     localuser: guest
     localuser_password: !unsafe Muster!
 
+# Teacherdevices
 teacherlaptop:
   hosts:
+    nbt[001:999]:
   vars:
     exam_mode: false
     # vpn: wg