Handcraft Remote Control

Recently Jaydan likes to take my radio controller and hold on to it before I switch off the lights, fan or TV. He would ask me to wait and only when he use the controller and point towards the switch and said "beep!", then I am allowed to switch on and off the lights. Same goes to the fan and TV.
So, I decided to make something by myself to let him continue his pretend play and give my remote control a break. At the same time, let him recognise words.