You can use Lamptan Smart to control smart lights, smart plugs in your house by voice.
Some commands:
* Ok Google, turn on kitchen light
* Ok Google, turn off kitchen light
* Ok Google, dim livingroom light
* Ok Google, brighten livingroom light
* Ok Google, set the livingroom light to 20 percent
* Ok Google, set bedroom light to Blue
* Ok Google, turn on plug
* Ok Google, turn off plug