A, invent time machine and go back to before you lost it and tell you past self not to loose it.
B, tear your house apart in a systematic fashion of top to bottom via the landmark case "clean the house top to bottom".
C, go buy a new a phone.
I can't take this serious. If the phone is dead, what do you expect us to do? Tell you some way to magically wave electricity in the air that will find it's way to your phone and charge it.
Now an android phone with android device manager enabled, https/www.google.ca/android/devicemanager could be forced to ring, but if it's dead, you are out of luck. Next time look for answers quicker before the battery is dead.
Oh, an always look in the couch cushions. Not once, not twice, but 3 times. 95% of the time a phone is there.