For me, Looking at my hands is always a dead give-away that I am dreaming.
Extra fingers, missing fingers, bent fingers, .....half fingers, you name it.
Something is always weird about my hands.
Here is one I like; go through your keys, (this one is for the house, this one is for the car, etc.) I've seen some crazy looking keys.
& try to find a mirror, you'll be surprised how handsome you are. :)
Peace,
The Cutter