New Twiddle

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  displayItems: [
          {
            value: 'Lex Diamond',
            label: 'Raekwon'
          },
          {
            value: 'Johnny Blaze',
            label: 'Method Man'
          },
          {
            value: 'Tony Starks',
            label: 'Ghostface'
          }
        ]
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#each displayItems as |item index|}}
  {{my-component item=item index=index}}
  
{{/each}}
<br>
<br>

templates.components.my-component.hbs

<div data-test={{hook "item" index=index containerIndex=containerIndex}}>{{item}}</div>

twiddle.json

{
  "version": "0.10.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}