New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  something: Ember.computed(function() {
    let owner = Ember.getOwner(this);
    let thing = owner.lookup('object:project');
    debugger;
    return thing.get('myService').foobar();
  })
});

initializers.register-objects.js

import Foobar from '../objects/my-object';

export function initialize(app) {
  app.register('object:project', Foobar);
}

export default {
  name: 'register-objects',
  initialize
};

objects.my-object.js

import Ember from 'ember';

export default Ember.Object.extend({
  myService: Ember.inject.service('my-service') 
});

services.my-service.js

import Ember from 'ember';

export default Ember.Service.extend({
  foobar() {
    return "the foobar";
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.10.4",
  "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": {}
}