I have a wheeled chair...I'd kick my chair at the zombie from under me,and run downstairs,and bash it with a lamp on the landing on the way down. Continue to the basement,and pelt it with shoes from the basement landing. In the basement,there's a standard issue Canadian Armed Forces bayonet,which is nine or so inches long. Or,I could use the machette that could cut through arctic ice. If running downstairs ain't an option,I'd still toss my chair at it,but I'd then retrieve a bike pump from my closet,which is two meters away.