diff --git a/apps/mywelcome/custom.html b/apps/mywelcome/custom.html
index 6b73a4ac4..c4c721765 100644
--- a/apps/mywelcome/custom.html
+++ b/apps/mywelcome/custom.html
@@ -1,92 +1,130 @@
 <html>
   <head>
-    <style>
-      body {
-        padding: 0;
-        margin: 0;
-      }
-      html, body, #map {
-        height: 100%;
-        width: 100%;
-      }
-      #controls {
-        padding: 10px;
-        margin: 10px;
-        border: 1px solid black;
-        position:absolute;
-        right:0px;bottom:0px;
-        background-color: rgb(255, 255, 255);
-        z-index: 100;
-      }
-    </style>
-    <div id="controls">
-      <p>Create your events on the current week. Keep in note that your events repeat weekly.</p>
-      <p>One you have created your events, Click <button id="upload" class="btn btn-primary">Upload</button></p>
-    </div>
-    <meta charset='utf-8' />
     <link rel="stylesheet" href="../../css/spectre.min.css">
-    <link href='fullcalendar/main.css' rel='stylesheet' />
-    <script src='fullcalendar/main.js'></script>
+  </head>
+  <body>
+<div class="form-group">
+    <p>Style: <select class="form-select" id="style">
+        <option>Christmas</option>
+        <option>Birthday</option>
+      </select>
+    </div></p>
+    <p>Line 1: <input type="text" id="line1" class="form-input" value="Merry Christmas"></p>
+    <p>Line 2: <input type="text" id="line2" class="form-input" value="Someone"></p>
+    <p>Line 3 (smaller): <input type="text" id="line3" class="form-input" value="Love from"></p>
+    <p>Line 4 (smaller): <input type="text" id="line4" class="form-input" value="Espruino Team"></p>
+</div>
+    <p><button id="try" class="btn">Try in Emulator</button></p>
+    <p><button id="upload" class="btn btn-primary">Upload</button></p>
+    <p>This is currently Christmas-themed, but more themes will be added in the future.</p>
+
+    <script src="../../core/lib/customize.js"></script>
+
     <script>
-      
-    function getApp(){
-      var events = calendar.getEvents()
-      return`(function() {
-        g.drawString(${JSON.stringify(calendar.getEvents().start)},x,y+=20);
-        g.drawString(${JSON.stringify(calendar.getEvents().end)},x,y+=20);
-        g.flip();
-        g.clear();
-        setInterval(draw,50);
-        })();
-      `;
+function getApp() {
+  // get the text to add
+  var line1 = document.getElementById("line1").value;
+  var line2 = document.getElementById("line2").value;
+  var line3 = document.getElementById("line3").value;
+  var line4 = document.getElementById("line4").value;
+  var style = document.getElementById("style").value;
+  // build the app's text using a templated String
+  if (style=="Birthday") return `(function() {
+    var ib = require("heatshrink").decompress(atob("jk0ggGDhOZAAWQCYwMEBxAMFAAIaHyc/+c5DgwMC/84Dg4aCBgwcDBoOf+Y4GBoQEBn4zCI44DBDQ4NEyf4BpgoIBoefxINMBhApEBrQAKBrrrGWpANZHBT7FBpYqIFAYcJBggNOFQwoFDgwMHBwoMIBwYMKBrkykANLmcwBu0zBrMDBv4AFN5gA/ADY"));
+var ir = require("heatshrink").decompress(atob("jk0ggGDhvdAAXQCYwMEBxAMFAAIaH6c/+c9DgwMC/8zDg4aC/4YCHIwNB7/zHAwNCAgM/DQwqDAYIaHBonT/oNMFBAND74NNBhApEBrQAKBrrrGWpANZHBT7FBpYqIFAYcJBgkA5oMF7gNFFQwoFDgwMHHIoMIAAPM5gMKBrk0oANLmcwBu0zBrMDBv4AFN5gA/ADYA="));
+var ig = require("heatshrink").decompress(atob("jk0ggGDg93AAVwCYwMEBxAMFAAIaHuc/+c3DgwMC/8yDg4aC/4YCHIwNBv/zHAwNCAgM/DQwqDAYIaHBolz+4NMFBANDv8nBpgMIFIgNaABQNddYy1IBrI4KfYoNLFRAoDDhIMEgHnBgt+BooqGFAoqGBg4OFBhAODBhQNcmUgBpczmAN2mYNZgYN/AApvMAH4Ab"));
+  var igift = require("heatshrink").decompress(atob("q1QxH+ADOi0QbZ5nMHDQAbKgIACKa4ACKnJWVKghW0KgxWTKgxWyKhBWRKhBWwKhRWPKhRWuKhhWNKhhWtKpxWKKhys8KxBU8Ky5U+KypU/KyhU/KyhU/KynGKn5WTKn5WUKmHCADpJJE7uYABZUfKuuYKv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/AAv+Kv5VT/wADyIAaKpIlbABZSEKv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/Kv5V/ADNtKv6rdKzZVwKhAABy5V/Khw"));
+  var W=240,H=240;
+  var blns = [];
+  function updateFlake(f) {
+    f.im = [ir,ig,ib][Math.round(Math.random()*100)%3];
+    f.s = 0.4+Math.random()*0.5;
+  }
+  for (var i=0;i<6;i++) {
+    var f = {
+      y:Math.random()*H,x:(0.5+(i<3?i:i+5))*W/11,
+      v:0.5+Math.random(),r:0,
+      t:(0.5+Math.random())*0.15,
+      };
+    updateFlake(f);
+    blns.push(f);
+  }
+  function draw() {
+    blns.forEach(f=>{
+      f.y-=f.v;f.r+=f.t;
+      if (f.y<-22) {
+        f.y=H+22;
+        updateFlake(f);
       }
-      
-      document.addEventListener('DOMContentLoaded', function() {
-        var calendarEl = document.getElementById('calendar');
-        var calendar = new FullCalendar.Calendar(calendarEl, {
-          initialView: 'timeGridWeek',
-          headerToolbar: {
-            left: '',
-            center: 'title',
-            right: 'timeGridWeek,listWeek'
-          },
-        navLinks: true, // can click day/week names to navigate views
-        editable: true,
-        selectable: true,
-        selectMirror: true,
-        nowIndicator: true,
-        editable: true,
-        height: 800,
-        select: function(arg) {
-          var title = prompt('Event Title:');
-          if (title) {
-            calendar.addEvent({
-              title: title,
-              start: arg.start,
-              end: arg.end,
-              allDay: arg.allDay
-            })
-          }
-          calendar.unselect()
-        },
-        eventClick: function(arg) {
-          if (confirm('Are you sure you want to delete this event?')) {
-            arg.event.remove()
-          }
-        },
-        });
-        calendar.render();
+      g.drawImage(f.im,f.x,f.y,{rotate:Math.sin(f.r)/2,scale:f.s});
+    });
+    var x = W/2, y = H/2;
+    g.drawImage(igift,x-43,y-80);
+    g.setFont("6x8",2).setFontAlign(0,0);
+    g.drawString(${JSON.stringify(line1)},x,y+=20);
+    g.drawString(${JSON.stringify(line2)},x,y+=20);
+    g.setFont("6x8");
+    g.drawString(${JSON.stringify(line3)},x,y+=20);
+    g.drawString(${JSON.stringify(line4)},x,y+=10);
+    g.flip();
+  }
+  g.clear();
+  setInterval(draw,50);
+})()`;
+  // if (style=="Christmas")
+  return `(function() {
+  var isnow = require("heatshrink").decompress(atob("jEagQWTgfAAocf+gFDh4FDiARBggVB3AFBl3Agf8jfkn/AgX/v/9/+Agfv/2//YrBgfwh4wCgfghYFJCIYdFFIw1EIIpNFL44FFOIoAP"));
+  var itree = require("heatshrink").decompress(atob("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"));
+  var W=g.getWidth(),H=g.getHeight();
+  var flakes = [];
+  for (var i=0;i<10;i++) {
+    var f = {
+      y:Math.random()*H,
+      x:(0.5+(i<5?i:i+5))*W/15,
+      v:0.7+Math.random(),
+      s:0.6+Math.random(),
+      r:0,
+      t:0.1*(Math.random()-0.5)
+    };
+    f.v = f.s * (1+Math.random());
+    flakes.push(f);
+  }
+  function draw() {
+    flakes.forEach(f=>{
+      f.y+=f.v;f.r+=f.t;
+      if (f.y>H+16) f.y=-8;
+      g.drawImage(isnow,f.x,f.y,{rotate:f.r,scale:f.s});
+    });
+    var x = W/2, y = H/2;
+    g.drawImage(itree,x-27,y-80);
+    g.setFont("6x8",2).setFontAlign(0,0);
+    g.drawString(${JSON.stringify(line1)},x,y+=20);
+    g.drawString(${JSON.stringify(line2)},x,y+=20);
+    g.setFont("6x8");
+    g.drawString(${JSON.stringify(line3)},x,y+=20);
+    g.drawString(${JSON.stringify(line4)},x,y+=10);
+    g.flip();
+  }
+  g.clear();
+  setInterval(draw,50);
+})();
+`;
+}
+      // when 'try' is clicked, load the emulator...
+      document.getElementById("try").addEventListener("click", function() {
+        window.open("https://www.espruino.com/ide/emulator.html?code="+encodeURIComponent(getApp())+"&upload");
       });
+
+      // When the 'upload' button is clicked...
       document.getElementById("upload").addEventListener("click", function() {
+        // send finished app (in addition to contents of app.json)
         sendCustomizedApp({
           storage:[
-            {"name":"sCalendar.custom.js", url:"schoolCalender.js", content:"Hello World"}
+            {name:"mywelcome.custom.js", url:"app.js", content:getApp()},
           ]
         });
       });
+
     </script>
-  </head>
-  <body>
-    <div id='calendar'></div>
   </body>
 </html>
