diff --git a/utils/objects.js b/utils/objects.js
new file mode 100644
index 0000000..d4f00d4
--- /dev/null
+++ b/utils/objects.js
@@ -0,0 +1,107 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var o = null;
+
+// TODO: https://github.com/MozillaSecurity/octo/issues/7
+
+function Objects() {
+  this.counter = 0;
+  this.container = {};
+}
+
+Objects.prototype.add = function (category, member) {
+  member = member ? member : "o" + this.counter;
+  if (!this.has(category)) {
+    this.container[category] = [];
+  }
+  this.container[category].push({type: category, name: member});
+  ++this.counter;
+  return this.container[category].slice(-1)[0].name;
+};
+
+Objects.prototype.get = function (category, last) {
+  if (!(category in this.container)) {
+    //return {type:null, name:null};
+    Utils.traceback();
+    throw new Error(category + " is not available.");
+  }
+  if (last) {
+    return this.container[category].slice(-1)[0];
+  }
+  return Random.index(this.container[category]);
+};
+
+Objects.prototype.pick = function (category, last) {
+  try {
+    return this.get(category, last).name;
+  } catch (e) {
+    Utils.traceback();
+    throw Logger.JSError("Error: pick(" + category + ") " + category + " is undefined.");
+  }
+};
+
+Objects.prototype.pop = function (objectName) {
+  var self = this;
+  Utils.getKeysFromHash(this.container).forEach(function (category) {
+    self.container[category].forEach(function (obj) {
+      if (obj.name == objectName) {
+        self.container[category].splice(self.container[category].indexOf(obj), 1);
+      }
+    });
+  });
+};
+
+Objects.prototype.contains = function (categoryNames) {
+  var categories = [], self = this;
+  categoryNames.forEach(function (name) {
+    if (self.has(name)) {
+      categories.push(name);
+    }
+  });
+  return (categories.length == 0) ? null : categories;
+};
+
+Objects.prototype.show = function (category) {
+  return (category in this.container) ? this.container[category] : this.container;
+};
+
+Objects.prototype.count = function (category) {
+  return (category in this.container) ? this.container[category].length : 0;
+};
+
+Objects.prototype.has = function (category) {
+  if (category in this.container) {
+    this.check(category);
+    return !!(this.container[category].length > 0);
+  }
+  return false;
+};
+
+Objects.prototype.valid = function () {
+  var items = [], self = this;
+  Utils.getKeysFromHash(self.container).forEach(function (category) {
+    self.check(category);
+  });
+  Utils.getKeysFromHash(self.container).forEach(function (category) {
+    for (var i = 0; i < self.container[category].length; i++) {
+      items.push(self.container[category][i].name);
+    }
+  });
+  return items;
+};
+
+Objects.prototype.check = function (category) {
+  var self = this;
+  self.container[category].forEach(function (object) {
+    try {
+      var x = /*frame.contentWindow.*/eval(object.name);
+      if (x === undefined || x == null) {
+        self.pop(object.name);
+      }
+    } catch (e) {
+      self.pop(object.name);
+    }
+  });
+};