diff --git a/src/components/_headNav.vue b/src/components/_headNav.vue
index 50b8509..1bc4782 100644
--- a/src/components/_headNav.vue
+++ b/src/components/_headNav.vue
@@ -1,14 +1,10 @@
 <template>
   <nav class="navbar navbar-expand-lg bg-body-tertiary">
     <div class="container-fluid">
-      <a
-        class="navbar-brand"
-        href="#"
-        @click.prevent
-      >
+      <span class="navbar-brand">
         <i class="fas fa-robot fa-fw me-1 text-info" />
         Twitch-Bot
-      </a>
+      </span>
 
       <button
         class="navbar-toggler"
diff --git a/src/components/_toast.vue b/src/components/_toast.vue
new file mode 100644
index 0000000..6dbd231
--- /dev/null
+++ b/src/components/_toast.vue
@@ -0,0 +1,82 @@
+<template>
+  <div
+    ref="toast"
+    :class="classForToast(toast)"
+    role="alert"
+    aria-live="assertive"
+    aria-atomic="true"
+  >
+    <div class="d-flex">
+      <div class="toast-body">
+        {{ toast.text }}
+      </div>
+      <button
+        type="button"
+        :class="classForCloseButton(toast)"
+        data-bs-dismiss="toast"
+        aria-label="Close"
+      />
+    </div>
+  </div>
+</template>
+
+
+<script lang="ts">
+import { defineComponent, PropType } from 'vue'
+import { Toast } from 'bootstrap'
+import { ToastContent } from './_toaster.vue'
+
+export default defineComponent({
+  data() {
+    return {
+      hdl: null,
+    }
+  },
+
+  emits: ['hidden'],
+
+  methods: {
+    classForCloseButton(toast: ToastContent): string {
+      const classes = [
+        'btn-close',
+        'me-2',
+        'm-auto',
+      ]
+
+      if (toast.color) {
+        classes.push('btn-close-white')
+      }
+
+      return classes.join(' ')
+    },
+
+    classForToast(toast: ToastContent): string {
+      const classes = [
+        'toast',
+        'align-items-center',
+      ]
+
+      if (toast.color) {
+        classes.push('border-0', `text-bg-${toast.color}`)
+      }
+
+      return classes.join(' ')
+    },
+  },
+
+  mounted() {
+    this.$refs.toast.addEventListener('hidden.bs.toast', () => this.$emit('hidden'))
+    this.hdl = new Toast(this.$refs.toast)
+    this.hdl.show()
+  },
+
+  name: 'TwitchBotEditorToast',
+
+  props: {
+    toast: {
+      required: true,
+      type: Object as PropType<ToastContent>,
+    },
+  },
+})
+</script>
diff --git a/src/components/_toaster.vue b/src/components/_toaster.vue
new file mode 100644
index 0000000..908afc3
--- /dev/null
+++ b/src/components/_toaster.vue
@@ -0,0 +1,47 @@
+<template>
+  <div class="toast-container bottom-0 end-0 p-3">
+    <toast
+      v-for="toast in toasts"
+      :key="toast.id"
+      :toast="toast"
+      @hidden="removeToast(toast.id)"
+    />
+  </div>
+</template>
+
+<script lang="ts">
+import BusEventTypes from '../helpers/busevents'
+import { defineComponent } from 'vue'
+import Toast from './_toast.vue'
+
+export type ToastContent = {
+  id: string
+  color: string | undefined
+  text: string
+}
+
+export default defineComponent({
+  components: { Toast },
+
+  data() {
+    return {
+      toasts: [] as ToastContent[],
+    }
+  },
+
+  methods: {
+    removeToast(id: string) {
+      this.toasts = this.toasts.filter((t: ToastContent) => t.id !== id)
+    },
+  },
+
+  mounted() {
+    this.bus.on(BusEventTypes.Toast, (toast: ToastContent) => this.toasts.push({
+      ...toast,
+      id: crypto.randomUUID(),
+    }))
+  },
+
+  name: 'TwitchBotEditorToaster',
+})
+</script>
diff --git a/src/components/app.vue b/src/components/app.vue
index 3cb753f..69c30a8 100644
--- a/src/components/app.vue
+++ b/src/components/app.vue
@@ -48,6 +48,8 @@
       </div>
       <div class="layoutContent">
         <router-view />
+
+        <toaster />
       </div>
     </div>
   </div>
@@ -57,9 +59,10 @@
 import { defineComponent } from 'vue'
 
 import HeadNav from './_headNav.vue'
+import Toaster from './_toaster.vue'
 
 export default defineComponent({
-  components: { HeadNav },
+  components: { HeadNav, Toaster },
 
   name: 'TwitchBotEditorApp',
 })
diff --git a/src/components/login.vue b/src/components/login.vue
index 475c0e2..4c6ce93 100644
--- a/src/components/login.vue
+++ b/src/components/login.vue
@@ -11,16 +11,19 @@
         Login with Twitch
       </button>
     </div>
+    <toaster />
   </div>
 </template>
 
 <script lang="ts">
+import BusEventTypes from '../helpers/busevents'
 import { defineComponent } from 'vue'
 
 import HeadNav from './_headNav.vue'
+import Toaster from './_toaster.vue'
 
 export default defineComponent({
-  components: { HeadNav },
+  components: { HeadNav, Toaster },
 
   computed: {
     authURL() {
@@ -49,7 +52,7 @@ export default defineComponent({
   },
 
   mounted() {
-    this.$root.bus.on('login-processing', (loading: boolean) => {
+    this.$root.bus.on(BusEventTypes.LoginProcessing, (loading: boolean) => {
       this.loading = loading
     })
   },
diff --git a/src/helpers/busevents.ts b/src/helpers/busevents.ts
new file mode 100644
index 0000000..042bf13
--- /dev/null
+++ b/src/helpers/busevents.ts
@@ -0,0 +1,13 @@
+/* eslint-disable no-unused-vars */
+
+enum BusEventTypes {
+  ChangePending = 'changePending',
+  ConfigReload = 'configReload',
+  Error = 'error',
+  FetchError = 'fetchError',
+  LoadingData = 'loadingData',
+  LoginProcessing = 'loginProcessing',
+  Toast = 'toast',
+}
+
+export default BusEventTypes
diff --git a/src/helpers/template.ts b/src/helpers/template.ts
new file mode 100644
index 0000000..82b38cf
--- /dev/null
+++ b/src/helpers/template.ts
@@ -0,0 +1,15 @@
+export const BuiltinTemplateFunctions = [
+  'and',
+  'call',
+  'html',
+  'index',
+  'slice',
+  'js',
+  'len',
+  'not',
+  'or',
+  'print',
+  'printf',
+  'println',
+  'urlquery',
+]
diff --git a/src/main.ts b/src/main.ts
index 963ecc5..7a590ef 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -9,7 +9,9 @@ import 'bootstrap/dist/js/bootstrap.bundle' // Popper & Bootstrap globally avail
 import { createApp, h } from 'vue'
 import mitt from 'mitt'
 
+import BusEventTypes from './helpers/busevents'
 import ConfigNotifyListener from './helpers/configNotify'
+import { ToastContent } from './components/_toaster.vue'
 
 import router from './router'
 import App from './components/app.vue'
@@ -36,20 +38,17 @@ const app = createApp({
 
       // We renew 720sec before expiration (0.8 * 1h)
       return new Date(this.tokenExpiresAt.getTime() - 720000)
-    }
+    },
   },
 
   data(): Object {
     return {
       now: new Date(),
+      tickers: {},
       token: '',
       tokenExpiresAt: null as Date | null,
       tokenUser: '',
-
       userInfo: null as null | {},
-
-      tickers: {},
-
       vars: {},
     }
   },
@@ -64,8 +63,10 @@ const app = createApp({
      */
     check403(resp: Response): Response {
       if (resp.status === 403) {
-        // User token is not valid and therefore should be removed
-        // which essentially triggers a logout
+        /*
+         * User token is not valid and therefore should be removed
+         * which essentially triggers a logout
+         */
         this.logout()
         throw new Error('user has been logged out')
       }
@@ -76,7 +77,9 @@ const app = createApp({
     loadVars(): Promise<void | Response> {
       return fetch('editor/vars.json')
         .then((resp: Response) => resp.json())
-        .then((data: any) => { this.vars = data })
+        .then((data: any) => {
+          this.vars = data
+        })
     },
 
     login(token: string, expiresAt: Date, username: string): void {
@@ -128,18 +131,22 @@ const app = createApp({
   mounted(): void {
     this.bus.on('logout', this.logout)
 
-    this.$root.registerTicker('updateRootNow', () => { this.now = new Date() }, 30000)
+    this.$root.registerTicker('updateRootNow', () => {
+      this.now = new Date()
+    }, 30000)
     this.$root.registerTicker('renewToken', () => this.renewToken(), 60000)
 
     // Start background-listen for config updates
-    new ConfigNotifyListener((msgType: string) => { this.$root.bus.emit(msgType) })
+    new ConfigNotifyListener((msgType: string) => {
+      this.$root.bus.emit(msgType)
+    })
 
     this.loadVars()
 
     const params = new URLSearchParams(window.location.hash.replace(/^[#/]+/, ''))
     const authToken = params.get('access_token')
     if (authToken) {
-      this.$root.bus.emit('login-processing', true)
+      this.$root.bus.emit(BusEventTypes.LoginProcessing, true)
       fetch('config-editor/login', {
         body: JSON.stringify({ token: authToken }),
         headers: { 'Content-Type': 'application/json' },
@@ -147,7 +154,11 @@ const app = createApp({
       })
         .then((resp: Response): any => {
           if (resp.status !== 200) {
-            this.$root.bus.emit('login-processing', false)
+            this.$root.bus.emit(BusEventTypes.LoginProcessing, false)
+            this.bus.emit(BusEventTypes.Toast, {
+              color: 'danger',
+              text: 'Login failed',
+            } as ToastContent)
             throw new Error(`login failed, status=${resp.status}`)
           }