Arbitrary properties set via an object hash

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  init() {
    this._super(...arguments)    
    
    if (this.hash) {
      Object.keys(this.hash).forEach((key) => {
        Ember.defineProperty(this, key, Ember.computed.alias(`hash.${key}`))
      })
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  dataDriven: {
    foo: 'foo',
    bar: 'bar'
  }
});

templates.application.hbs

Six one way...
{{my-component
	foo='foo'
  bar='bar'
}}
<br>
...half a dozen the other
{{my-component
	hash=dataDriven
}}

templates.components.my-component.hbs

<div>{{foo}}</div>
<div>{{bar}}</div>

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": {}
}