Well, this depends on how far "left" is. If it means "within my reach" I have an electric pencil sharpener, a small clock, a printer, my iPhone, and a case of 96 pencils. I could sharpen the pencils into improvised stabbing weapons, but that wouldn't do me much good.
If left is "within my room" I have a guitar hero guitar, two bokken and a shinai. And finally, if left is "within my house," I have two WWII bayonets in my garage.