batteries
power the camera power the cellular power the death ray power the flashlight power the gadget power the keyboard power the remote power the scale put in electronics put inside it put inside radio put into the dryer remove and replace replace the dead ones replace the old ones run it run the beacon run the camera run the equipment supply power to the gadget to make the alarm work turn on the camera zap your tongue flavor water with use as paperweights crush herbs and spices roll things flat with (as a rolling pin) kill bugs make a fire