Trapped!

You awaken a few minutes later. Your head is throbbing, but you're still alive. You look around. The explosion had blown a hole in the wall. An exit! You run through it. You are now in a room with several large TV's. Suddenly, on one of them, a man appears. He has a brown beard, and he has a swastika tatooed on his forehead. "Hello," he says. "I see you made it past the first challenge in my building. Welcome to my home. In this building, you will encounter challenges that will test your strength, skill, and mental ability. In this room is a key. There is a door on the right side of you. You must find the key and unlock the door. There's only one thing. In two minutes, my booby traps will set off. They are exceedingly painful to endure, and they will kill you. Good luck!"
Quickly, you view your surroundings. There is a dresser, a table, and a mirror. On the table is a machete. You wonder why he would put a machete there. Then you realize something. He wants you to cut off one of your body parts. You grab the machete and think. Where could it be?